Class / Patent application number | Description | Number of patent applications / Date published |
359330000 | Parametric oscillator | 52 |
20080304136 | Optical parametric oscillator - There is provided an optical parametric oscillator capable of converting a wavelength in a broader range and generating an output beam with high efficiency. The optical parametric oscillator includes: a non-linear optical material optical parametrically converting a beam pumped from a laser; and input and output optical devices opposing each other, the input and output optical devices guiding the optical parametrically-converted beam to the non-linear optical material to oscillate, wherein the input optical device includes an input optical mirror guiding the pumping beam into the oscillator, and the output optical device includes a plurality of output optical mirrors each guiding the optical parametrically-converted beam outside the oscillator, the output optical mirrors having reflectivities different from one another with respect to a wavelength of the optical parametrically-converted beam. | 12-11-2008 |
20090021825 | PARAMETRIC GENERATION USING INTERSECTING CAVITIES - A parametric device having a non-linear material ( | 01-22-2009 |
20090040597 | Parametric Generation with Lateral Beam Coupling - An optical parametric device, for example an optical parametric generator or amplifier or oscillator, comprising a non-linear material ( | 02-12-2009 |
20090141340 | FIBER OPTICAL PARAMETRIC OSCILLATOR WITH HIGH POWER AND BANDWIDTH - The present invention provides methods, systems, and apparatus of improved fiber-based optical parametric oscillators (FOPOs). These oscillators can be used in the creation of short pulsed laser radiation, which are useful in numerous applications, such as characterization of materials and molecules. A relationship between fiber length and performance is realized, where shorter lengths counterintuitively provide greater power and width of output bands. This relationship is used to develop improved FOPOs. For example, fibers of 10 cm or less may be used to obtain superior performance in terms of wavelength tunability (e.g. bandwidth of 200 nm and greater) and output power (e.g. pulse power of 1 nJ). Other realized relationships between length and wavelength position of output bands are also used to select the wavelength range output from the FOPO. The diameter of the fiber may be selected to provide positioning (e.g. a centering) of the range of attainable output wavelengths. | 06-04-2009 |
20090153948 | THz Wave Generation Device - [Task] To provide the THz wave generator restricting increase in manufacturing cost or large size of the entirety of the apparatus and generating efficiently the several-W THz wave. | 06-18-2009 |
20090168148 | Wide-Band Ultrashort-Pulse Optical Oscillator Utilizing Chirped Pulse Amplification - A wide-band ultrashort-pulse optical oscillator includes: an optical amplification medium | 07-02-2009 |
20090251767 | METHOD AND APPARATUS FOR GENERATING TERAHERTZ WAVE - A method and an apparatus for generating a terahertz wave, wherein one end face | 10-08-2009 |
20090268276 | SYSTEM AND METHOD OF ENTANGLED PHOTONS GENERATION - The present invention provides an apparatus and method for producing entangled photon pairs via four-wave mixing in optical fiber. The source of entangled photons is designed to be stable with no manual alignment. This is accomplished with proper system design using polarization maintaining fibers or polarization controllers with feedback control. The source may contain a method of switching the output from an unpolarized entangled state to a polarized state, where the polarized state can be used to more easily align subsequent photon measurement systems to the proper configuration for measuring the unpolarized entangled state. The invention further provides a means to engineer the apparatus, including the use of a periodic filter common to both entangled pairs, such that the wavelength spacing between the pairs can be optimized such that multiple pairs can be generated with reduced adverse influence from Raman scattering. | 10-29-2009 |
20100039699 | Wavelength Converter and Wavelength Conversion Apparatus - A wavelength converter which performs simultaneously wavelength conversion for a plurality of input light wavelengths that are unequally intervals, is provided. The nonlinear material of the wavelength converter has a modulation structure which has modulation of a nonlinear optical constant at a period Λ | 02-18-2010 |
20100103505 | POLARIZATION-INDEPENDENT FOUR-WAVE MIXING IN A BIREFRINGENT FIBER - A two-pump optical parametric device (OPD) having a nonlinear birefringent fiber, in which various four-wave mixing (FWM) processes can occur. The OPD applies, to the nonlinear birefringent fiber, two pump waves, each polarized at about 45 degrees with respect to a birefringence axis of the fiber, and a polarized input signal. A relevant FWM process couples the pump waves and the signal to cause the fiber to generate a desired output signal. In one configuration, the relevant FWM process is inverse modulational interaction, which causes the desired output signal to be generated through amplification or attenuation of the input signal. In another configuration, the relevant FWM process is phase conjugation, which causes the desired output signal to be generated through amplification of the input signal. In yet another configuration, the relevant FWM process is Bragg scattering, which causes the desired output signal to be generated as a corresponding idler signal. | 04-29-2010 |
20100208334 | SYSTEM AND METHOD FOR ENTANGLED PHOTONS GENERATION AND MEASUREMENT - Apparatus and method for producing quantum entangled signal and idler photon pairs is provided. The apparatus makes use of a nonlinear optical fiber to generate the entangled photons. The use of an external broad band light source for alignment of any downstream measurement apparatuses is disclosed. One or more polarized output signals can be generated at both the signal and idler wavelengths using the alignment source, allowing the downstream measurement apparatuses to be aligned using classical light. Multiple signal and idler wavelengths can be generated and aligned using such a system. | 08-19-2010 |
20100226003 | Optical parametric oscillator with achromatic phase-maintaining pump return - The invention applies to doubly resonant optical parametric oscillators comprising a non-linear crystal ( | 09-09-2010 |
20100321767 | METHODS AND DEVICES FOR GENERATION OF BROADBAND PULSED RADIATION - Methods and apparatus for non-collinear optical parametric ampliffication (NOPA) are provided. Broadband phase matching is achieved with a non-collinear geometry and a divergent signal seed to provide bandwidth gain. A chirp may be introduced into the pump pulse such that the white light seed is amplified in a broad spectral region. | 12-23-2010 |
20100328760 | WAVEGUIDE PARAMETRIC DEVICE AND METHOD - A waveguide parametric device including a multi-mode waveguide having orientation layers formed in a propagation direction of a signal beam and a pump beam propagating down the waveguide. The orientation layers are oppositely oriented to provide non-linear coupling between the pump beam and the signal beam and have a periodicity that provides quasi-phase matching for a fundamental propagation mode, where the waveguide has a size to accommodate multi-mode wave propagation. | 12-30-2010 |
20100328761 | OPTICAL APPARATUS - An optical parametric oscillator (OPO) comprises a resonant cavity for signal light, and an optically non-linear medium disposed in the resonant cavity for converting pump light into the signal light, wherein the resonant cavity is arranged so that in operation signal light is repeatedly output from and returned to the optically non-linear medium along a signal light path in a continuously repeating cycle, and the OPO comprises delay means for extending the time taken for signal light output from the optically non-linear medium in operation to return to the optically non-linear medium along the signal light path. | 12-30-2010 |
20110032599 | ELECTROMAGNETIC WAVE OSCILLATING DEVICES - It is provided a device of oscillating an electromagnetic wave having a frequency of 0.1 THz to 3 THz from pump and idler waves | 02-10-2011 |
20110032600 | ELECTROMAGNETIC WAVE OSCILLATING DEVICES - An oscillating device includes an oscillating substrate | 02-10-2011 |
20110032601 | ELECTROMAGNETIC WAVE OSCILLATING DEVICES - It is provided a device of oscillating an electromagnetic wave having a frequency of 0.1 THz to 3 THz from pump and idler waves by parametric effect. The device includes a supporting body | 02-10-2011 |
20110058248 | INFRARED FREQUENCY COMB METHODS, ARRANGEMENTS AND APPLICATIONS - Certain embodiments relate to and involve producing broadband phase-locked frequency combs in the near-infrared and mid-infrared spectral ranges. One such embodiment is directed to a system, with a pump laser and an optical parametric oscillator (OPO) resonator, that is configured to produce broad-bandwidth frequency combs in the near-infrared and mid-infrared frequency ranges. The pump laser is configured to produce femtosecond pulses of light having a pulse repetition rate. The optical parametric oscillator (OPO) resonator that is coupled to the pump laser for facilitating synchronous OPO pumping by matching a roundtrip time of the pulses of light within the OPO resonator with the pulse repetition rate of the pump laser. Among other more specific aspects, the OPO resonator can include a nonlinear optical gain element to provide broad-bandwidth parametric amplification, and optical elements to direct the pulses of light from the femtosecond laser to the nonlinear gain element and to direct subharmonic frequencies of the light out of the optical cavity. | 03-10-2011 |
20110116158 | CONTROL OF RELAXATION OSCILLATIONS IN INTRACAVITY OPTICAL PARAMETRIC OSCILLATORS - An intra-cavity optical parametric oscillator. The oscillator includes means for providing a non-linear loss for suppressing relaxation oscillations. | 05-19-2011 |
20110194172 | OPTICAL PARAMETRIC OSCILLATOR WITH OPTIMIZED OUTPUT COUPLING - An optical parametric oscillator including a nonlinear crystal pumped by a laser source and an optical resonator, including an optical interferometer, which determines a level of output coupling of the oscillator, allowing high stability, broad wavelength tuning, and output power level optimization. | 08-11-2011 |
20110242645 | SYSTEM AND METHOD FOR CONTROLLING OPTICAL OUTPUT OF A FREQUENCY CONVERSION DEVICE - A system and method for improving conversion efficiency of a difference frequency generator (DFG) and/or for outputting a desired shape of the output signal, where the method includes providing a pump source, modifying the pump pulse temporal shape for optimal DFG conversion efficiency, and providing the modified pump pulse to the DFG. The pump source may be, for example, a MOPA laser or a diode or any other suitable source. In one embodiment, the pump pulse shape is modified such that an initial gain within the DFG is high, followed by a lower level signal for efficient conversion within the DFG. An example of such a shape is a double square pulse. Other configurations are possible as well such as a single rectangular pulse shape. | 10-06-2011 |
20110255150 | Compact Solid State Entangled Photon Source - A compact source of polarization-entangled photons includes a laser source, producing a laser beam, a pair of nonlinear crystals, in optical contact with each other, with one of the pair of nonlinear crystals having an input face, with the laser beam incident on the input face, and another of the pair of nonlinear crystals rotated 90°, along an axis perpendicular to the input face, with respect to each other and a fiber coupling point, configured to receive a pair of single-mode fibers. Pairs of polarization-entangled photons are produced through spontaneous parametric down conversion of the laser beam and provided to the fiber coupling point. | 10-20-2011 |
20110261438 | BROADLY AND FAST TUNABLE OPTICAL PARAMETRIC OSCILLATOR - A coherent light source is provided for producing narrow-linewidth output, continuously tunable within a broad (at least one-octave-wide) range of optical wavelengths. The source is based on type-I or type-0 near-degenerate optical parametric oscillator (OPO), which uses a nonlinear optical crystal with either birefringent phase matching or quasi phase matching. The pump wavelength is chosen such that the OPO degeneracy wavelength (at twice the pump wavelength), is close to the point of zero group-velocity dispersion. That results in an extremely broad OPO bandwidth. Fast OPO wavelength tuning is achieved by rotating an intracavity diffraction grating. In accordance with the invention, the choice of a nonlinear crystal and a pump source determines the overall tuning range. For example, the use of lithium niobate provides tuning over the range of 1.3 to 3 microns, ZGP—3.8 to 8 microns, gallium arsenide—4 to 12 microns, CGA—6 to 13 microns. | 10-27-2011 |
20110273763 | Cavity-Enhanced Parametric Amplification at Full Repetition Rate - Seed light pulses and pump light pulses are generated; the seed light pulses are preferably chirped; and both are directed into an enhancement cavity at a full repetition rate. The enhancement cavity defines a closed optical path that contains a nonlinear medium that provides phase matching at a wavelength different from both the central seed wavelength and the central pump wavelength. The generation of the pump light pulses and the seed light pulses are synchronized to pass the seed light pulses through the nonlinear medium simultaneously with the pump light pulses to parametrically amplify the seed light pulses in the nonlinear medium to produce an amplified signal pulse and idler pulse. Increased conversion with low average pump power can be achieved, as well as gain bandwidth enhancement approaching octave-spanning levels. Additionally, in the case of chirped pump pulses with sufficient bandwidth, optimal output coupling can be designed to achieve the best impedance matching at each temporal coordinate and attain the highest possible conversion and bandwidth. | 11-10-2011 |
20120134013 | METHOD AND SYSTEM FOR OPTICAL CONVERSION - A cA crystal configured to change a frequency of a laser through an optical parametric oscillation (OPO) process and a difference frequency generation (DFG) process is provides. The crystal includes: an OPO/DFG segment that is quasi-periodically poled to yield (i) a conversion of a pump light applied thereto, to a first signal and an idler, and (ii) a conversion of a first signal applied thereto, to a second signal and to an idler signal, by phase-matching a difference frequency generation (DFG) process and an OPO process therein simultaneously, wherein the pump light has a frequency that equals a sum of a frequency of the first signal and a frequency of the idler and wherein the frequency of the first signal equals a sum of a frequency of the second signal and the frequency of idler. | 05-31-2012 |
20120154903 | MONOLITHIC FIXED OPTICAL DELAY GENERATORS - A monolithic fixed optical delay generator includes an optical substrate having a front face and a back face. A front coating is on the front face and a back coating is on the back face. The front coating is (i) highly reflective to a first wavelength and highly transmissive to a second wavelength while the back coating is highly reflective to the second wavelength, or (ii) the front coating is highly reflective to the second wavelength and is highly transmissive to the first wavelength while the back coating is highly reflective to the first wavelength. | 06-21-2012 |
20120162748 | COMPACT, HIGH BRIGHTNESS LIGHT SOURCES FOR THE MID AND FAR IR - Compact laser systems are disclosed which include ultrafast laser sources in combination with nonlinear crystals or waveguides. In some implementations fiber based mid-IR sources producing very short pulses and/or mid-IR sources based on a mode locked fiber lasers are utilized. Some embodiments may include an infrared source with an amplifier system comprising, in combination, a Tm fiber amplifier and an Er fiber amplifier. A difference frequency generator receives outputs from the Er and/or Tm amplifier system, and generates an output comprising a difference frequency. Exemplary applications of the compact, high brightness mid-IR light sources include medical applications, spectroscopy, ranging, sensing and metrology. | 06-28-2012 |
20120194901 | EFFICIENT TERAHERTZ SOURCES BASED ON DIFFERENCE-FREQUENCY GENERATION IN TRIPLY-RESONANT PHOTONIC RESONATORS - A system for efficient generation of THz radiation is provided that includes a triply-resonant nonlinear photonic resonator coupled to at least one near-infrared (NIR) or optical waveguide and to at least one THz waveguide. The energy traveling through the at least one near-infrared (NIR) or optical waveguide is converted to THz radiation inside the triply-resonant photonic resonator via a nonlinear difference frequency generation (DFG) process. | 08-02-2012 |
20120200912 | OPTICAL PARAMETRIC OSCILLATOR PUMPED BY FEMTOSECOND THIN-DISK LASER - Pulses from a mode-locked Yb-doped laser are spectrally broadened, and temporally compressed, then frequency-doubled and used to pump an optical parametric oscillator (OPO). The OPO output is tunable over a wavelength range from about 600 nm to about 1100 nm. | 08-09-2012 |
20120206792 | COMPACT NARROW BANDWIDTH TUNABLE SOURCE - Tunable light sources having a single optical parametric generation (OPG) source that results in an amplified, narrow bandwidth seed beam and methods of tuning therewith are disclosed. The tunable light source may include a polarization rotator to rotate a pump beam before a first pass through an OPG, and a linear-to-circular polarization device to polarize the pump beam directed back toward the OPG for a second pass therethrough. Alternately, the tunable light source may include an OPG source through which a pump beam passes only in the first direction, a separator that separates a signal beam from the pump beam exiting from the OPG, a narrowband wavelength filter that receives the signal beam and generate a seed beam, and a reflecting surface that directs the seed beam back through the OPG (opposite the first direction) to seed the back part of the pulse of the pulse laser. | 08-16-2012 |
20120236395 | Grating Based Optical Parametric Oscillator and Method of Dynamically Tuning the Oscillator for Generating Desired Optical Signals - According to an embodiment of the present invention, an optical parametric oscillator (OPO) (e.g., for a laser transmitting device) includes non-linear optical media, optical beam manipulating elements, and a narrow linewidth filter in the form of a rotatable grating. The grating enables rapid tuning of the oscillator to provide an output beam with a desired wavelength. A pump laser provides a pump laser beam, and the non-linear optical media convert the pump beam into light beams with a signal wavelength and an idler wavelength. The angular positions or orientations of the non-linear optical media relative to a longitudinal propagation axis of the optical parametric oscillator (OPO) are adjustable to effectively tune the resulting signal and idler wavelengths. An output coupler receives the resulting beams from the non-linear optical media, and emits beams with the desired wavelength (signal and/or idler wavelengths). | 09-20-2012 |
20120257270 | SYSTEMS AND METHODS FOR FIBER OPTIC PARAMETRIC AMPLIFICATION AND NONLINEAR OPTICAL FIBER FOR USE THEREIN - A high confinement nonlinear optical fiber is provided along with methods of parametric amplification for use thereof. The nonlinear optical fiber may include a plurality of concentric layers which are configured to provide different guiding regimes to low-frequency and high-frequency components through transverse geometry and refractive index profiling, thus reducing waveguide dispersion. The resulting optical fiber provides a parametric device with phase-matching in any spectral region of interest, such that a fiber optic parametric amplifier (FOPA) implementing the optical fiber can amplify in any spectral window of interest. A narrow-band FOPA configured to minimize phase mismatching is also provided for use with the optical fiber, and may be implemented as a light source or a monochromator. | 10-11-2012 |
20120262779 | NESTED-CAVITY OPTICAL PARAMETRIC OSCILLATOR FOR FAST FREQUENCY TUNING - Nested-cavity optical parametric oscillator for fast frequency tuning including a source of pump radiation (f | 10-18-2012 |
20130128340 | OPTICAL PARAMETRIC GENERATOR BASED ON A SLANT-STRIPE PERIODICALLY POLED NONLINEAR MATERIAL WITH OPTIMIZED LATERAL OUTPUT COUPLING OF A TERAHERTZ SIGNAL - An optical parametric device comprising a slant-stripe periodically poled nonlinear material that is operable to generate signal in response to interaction with a pump wave, the non-linear interaction being such that the pump and idler waves are collinear and the signal wave is non-collinear relative to the pump and idler waves, wherein the slant-stripe non-linear material is able to generate two idler waves and two signal waves, and the device is adapted to allow for the selection and output coupling of a required one of the two signal waves. | 05-23-2013 |
20130155493 | WALK-OFF COMPENSATOR WITH TILT FUNCTION - Techniques and structure are disclosed for implementing a spatial walk-off compensation mechanism having an integral tilt function. In some embodiments, the mechanism may comprise a tilt-ball mount having an integrated walk-off compensation medium. In some embodiments, the mechanism may be configured to receive an output beam from a non-linear converter (e.g., optical parametric oscillator or OPO) implementing a non-linear medium comprising a bi-refringent material (e.g., zinc germanium phosphide, or ZnGeP | 06-20-2013 |
20130208349 | Laser feedback damage mitigation assembly and apparatus - A laser assembly includes a semiconductor diode laser having an exit facet and capable of emitting a beam at a selected wavelength from the exit facet, a fast axis collimator optically coupled to the exit facet, the fast axis collimator for receiving the beam emittable from the exit facet and for collimating the beam along the fast axis thereof, and the fast axis collimator has one or more exterior surfaces, such that at least one of the one or more exterior surfaces includes a coating that is highly reflective for reflecting light at wavelengths other than the selected wavelength and anti-reflective for transmitting light at the selected wavelength. | 08-15-2013 |
20130258453 | QUANTUM ENTANGLED PHOTON PAIR GENERATOR - In a quantum entangled photon pair generator selectively generating polarization entangled photon pairs and time-bin entangled photon pairs, an excitation optical pulse shaper receives a linearly polarized optical pulse, and selectively outputs either one of a polarization excitation optical pulse pair to be a seedlight pulse for a polarization entangled photon pair and a consecutive excitation optical pulse pair to be a seedlight pulse for a time-bin entangled photon pair. An optical interferometer receives the polarization excitation optical pulse pair or the consecutive excitation optical pulse pair, and outputs a correlated photon pair forming signal and idler photons through a parametric fluorescence process. A quantum entangled photon pair extractor spatially extracting wavelength components corresponding to photons of the quantum entangled photon pair to output the components as the polarization entangled photon pair or the time-bin entangled photon pair. | 10-03-2013 |
20130293946 | OPTICAL FREQUENCY RULER - The present invention relates to frequency rulers. At least one embodiment includes a mode locked pump source operated at pulse repetition rate, and a pump output having a pump carrier envelope offset frequency. A nonlinear optical system outputs a frequency ruler spectrum comprising individual frequency modes. The frequency modes may be characterized by a frequency spacing which is an integer multiple of the repetition rate and by distinct ruler carrier envelope offset frequencies which exhibit at least one discontinuity across the frequency output. The ruler carrier envelope offset frequencies are substantially locked to the carrier envelope offset frequency of the pump laser. One preferred embodiment includes a frequency doubled, doubly resonant, non-degenerate OPO (DNOPO), a supercontinuum generation (SC) stage and at least one reference laser arranged downstream from a Tm fiber-based pump source. A plurality of beat signals generated therefrom provide for stabilization of the system. | 11-07-2013 |
20130314767 | SYSTEMS AND METHODS FOR FIBER OPTIC PARAMETRIC AMPLIFICATION AND NONLINEAR OPTICAL FIBER FOR USE THEREIN - A high confinement nonlinear optical fiber is provided along with methods of parametric amplification for use thereof The nonlinear optical fiber may include a plurality of concentric layers which are configured to provide different guiding regimes to low-frequency and high-frequency components through transverse geometry and refractive index profiling, thus reducing waveguide dispersion. The resulting optical fiber provides a parametric device with phase-matching in any spectral region of interest, such that a fiber optic parametric amplifier (FOPA) implementing the optical fiber can amplify in any spectral window of interest. A narrow-band FOPA configured to minimize phase mismatching is also provided for use with the optical fiber, and may be implemented as a light source or a monochromator. | 11-28-2013 |
20140063591 | HIGH-POWER MULTI-FUNCTION MILLIMETER-WAVE SIGNAL GENERATION USING OPO AND DFG - Apparatus and method for high-power multi-function millimeter-wavelength (THz-frequency) signal generation using OPO and DFG in a single cavity. In some embodiments, the OPO-DFG cavity includes an optical parametric oscillator (OPO) non-linear material that receives pump light I | 03-06-2014 |
20140092467 | Ultrabright long biphoton generation with non-linear optical material - Improved production of entangled photon pairs (biphotons) via spontaneous parametric down conversion (SPDC) is provided. In one aspect, forward-wave SPDC is performed in a monolithic resonator (resonant for both signal and idler) having a double pass pump geometry to provide a spectrally bright source of biphotons. In another aspect, backward-wave SPDC is performed in a resonator (resonant for both signal and idler) to provide a spectrally bright source of biphotons. For either of these approaches, the biphotons can be made to have polarization entanglement by using quasi phasematching (QPM) with two QPM periods simultaneously. | 04-03-2014 |
20140198375 | OPTICAL PHASE-SENSITIVE AMPLIFIER FOR DUAL-POLARIZATION MODULATION FORMATS - A method for amplifying optical signals includes determining a source optical signal, generating a first resultant signal including a pump signal and the source optical signal, sending the first resultant signal through a non-linear element to generate a second resultant signal including the first resultant signal and an idler signal, and sending the second resultant signal through a non-linear element to perform phase-sensitive amplification. The phase-sensitive amplification results in a third resultant signal including an amplified source optical signal, the pump signal, and the idler signal. The method also includes filtering the third resultant signal to remove the pump signal and the idler signal and outputting the amplified source optical signal. | 07-17-2014 |
20140333993 | Optical Sources - An optical source | 11-13-2014 |
20140333994 | METHOD AND DEVICE FOR THE OPTICAL PARAMETRIC AMPLIFICATION OF PULSES WITH FREQUENCY DRIFT - Method and device for the optical parametric chirped pulse amplification, using two pump signals and making it possible to extend the spectral gain band. | 11-13-2014 |
20150043056 | METHOD AND SYSTEM FOR GENERATING AND EMITTING TERAHERTZ RADIATION - A method of generating light is disclosed. The method comprises: directing an optical pulse to a semiconductor optical amplifier being at a temperature above 0° C. The optical pulse is preferably characterized by a wavelength within an emission spectrum of the semiconductor optical amplifier and by a pulse area selected to induce Rabi oscillations in the semiconductor optical amplifier, and to emit light at a frequency of at least 1 THz. | 02-12-2015 |
20150085349 | NONLINEAR OPTICAL DEVICE MANUFACTURED WITH 4H SILICON CARBIDE CRYSTAL - Provided is a nonlinear optical device manufactured with 4H silicon carbide crystal. The nonlinear optical crystal may be configured to alter at least a light beam ( | 03-26-2015 |
20160026066 | METHODS AND APPARATUS FOR IDLER EXTRACTION IN HIGH POWER OPTICAL PARAMETRIC AMPLIFIERS - An optical parametric amplifier and methods for idler extraction therein. Certain examples provide a method of extracting the idler at intermediate points within the optical parametric amplifier chain to improve conversion efficiency and/or maintain high beam quality (high Strehl ratio), where the pump beam has non-uniform profile. In one example, optical parametric amplifier includes an amplifier chain having a plurality of gain stages, each gain stage including a non-linear optical crystal, the plurality of gain stages configured to receive a signal seed and a pump beam and to produce an idler and an amplified signal, the pump beam having a non-uniform spatial profile, and a plurality of idler extractors interspersed with the plurality of gain stages and configured to extract the idler from intermediate points within the amplifier chain. The idler extractors can include polarizers, beam displacer crystals, or dichroic mirrors, for example. | 01-28-2016 |
20160131844 | TUNABLE ADD-DROP FILTER WITH AN ACTIVE RESONATOR - An add-drop filter for transmitting at least one signal is provided. The add-drop filter includes at least two optical waveguides capable of carrying the at least one signal, and at least one active resonator coupled between the optical waveguides, wherein the at least one active resonator provides gain that counteracts losses for the at least one signal. | 05-12-2016 |
20160147130 | CRYSTAL-PAIR COUNTER-ROTATOR WITH TRANSLATION CAPABILITY - In an optical parametric frequency conversion arrangement first and second optically nonlinear crystals ( | 05-26-2016 |
20160172818 | OPTICAL AMPLIFIER, OPTICAL AMPLIFYING SYSTEM, WAVELENGTH CONVERTER, AND OPTICAL COMMUNICATION SYSTEM | 06-16-2016 |
20160377959 | Stable, High Efficiency, Wavelength Tunable Fiber Optic Parametric Oscillator - An optical apparatus comprising: a source and a loop. The source generates a pump. The resonating cavity of the source includes: a gain medium; and a tunable filter for selecting a wavelength. The loop comprises: an input coupler; a waveguide; and an output coupler. The input coupler receives the pump and a signal and outputs the pump and the signal into the waveguide In the waveguide, energy in the pump is transferred into energy in the signal while a relative center position of the signal is crossing a center position of the pump in a first direction while both are passing through the waveguide and into the output coupler. The output coupler r outputs a first portion of the signal and a second portion of the signal is fed into the input coupler as the signal, completing the loop. | 12-29-2016 |