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| Number | Title | Issue Date |
| 8169692 | 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 ... | 05/01/2012 |
| 8094368 | Optical parametric oscillator A synchronously-pumped optical parametric oscillator (OPO 10) driven by the second harmonic output of a Kerr-lens-mode-locked Ti:sapphire laser (12) generates femtosecond pulses with wide tunability in the visible and ultraviolet spectrum. The OPO uses... | 01/10/2012 |
| 7982944 | Method and apparatus for optical frequency comb generation using a monolithic micro-resonator An optical frequency comb generator includes a laser device arranged for generating input laser light having a predetermined input light frequency, a dielectric micro-resonator having a cavity exhibiting a third order nonlinearity, so that the micro-resonator is cap... | 07/19/2011 |
| 7907332 | Wide-band ultrashort-pulse optical oscillator utilizing chirped pulse amplification A wide-band ultrashort-pulse optical oscillator includes: an optical amplification medium 1 that optically amplifies an incident light having a wide band or a plurality of bands so as to be converted into an oscillation light emitted from an optical resonator... | 03/15/2011 |
| 7898731 | 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 character... | 03/01/2011 |
| 7768695 | Parametric generation using intersecting cavities A parametric device having a non-linear material (4) for generating an idler wave and a signal wave (16) in response to a pump wave (14), the pump, idler and signal waves being non-collinear, the device having a cavity (10, 11) resonant a... | 08/03/2010 |
| 7764423 | 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 ... | 07/27/2010 |
| 7764422 | THz wave generation device In a THz wave generator for generating a THz wave from a THz wave generating element by inputting a plurality of laser beams having different wavelengths to the THz wave generating element, all of the plurality of laser beams are formed into a pulse beam by the puls... | 07/27/2010 |
| 7751117 | Optical parametric micro-oscillator comprising couplet cavities The invention relates to the field of optical parametric oscillators (OPO), especially to an essentially vertical monolithic system (S) for parametric conversion from a pump wave with a pump wavelength, said system comprising at least two resonant cavities (6, 7 | 07/06/2010 |
| 7729043 | Near infrared twin photon source Optical parametric oscillator including a semiconductor microcavity being configured to spatially localize polaritons of at least three quantized polariton energy levels to effect an optical parametric oscillation. ... | 06/01/2010 |
| 7729044 | Method and devices for generating stable and tunable light pulses Methods and devices for generating stable, tunable and intense output light pulses are provided. A primary beam of light pulses is used to form a filament in an interaction zone. A secondary bean of light pulses is superposed with the filament and interacts therewit... | 06/01/2010 |
| 7710637 | Method and apparatus for generating terahertz wave A method and an apparatus for generating a terahertz wave, wherein one end face 12a of a non-linear optical crystal 12 is positioned approximately orthogonally to a direction of generation of a terahertz wave 4, pump light 2 and id... | 05/04/2010 |
| 7706054 | 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 (13) that is operable to generate a signal and an idler wave in response to being stimulated with a pump wave. The non-linea... | 04/27/2010 |
| 7697196 | Tuneable optical amplifier or optical parametric oscillator A parametric process is provided for producing visible light at a second wavelength including pumping an optical fiber (4) with input light (1) at a first wavelength of less than one micron, which is longer than the second wavelength, and wherein the o... | 04/13/2010 |
| 7630126 | Two-pump optical parametric devices having reduced stimulated Raman scattering noise levels Two-pump optical parametric devices (OPDs), and methods of operating the same, generate desired output signals and idlers having reduced stimulated Raman scattering (SRS) noise levels. When the two-pump OPD is used as a two-pump optical parametric amplifier (OPA), t... | 12/08/2009 |
| 7626756 | Coating for optimising output coupling of em radiation A coating between a nonlinear crystal and a silicon prism coupler, prevents transmission of radiation scattered within the crystal by filtering out frequencies outside the silicon bandgap to avoid free carrier absorption, but transmits THz frequencies that correspon... | 12/01/2009 |
| 7495824 | Infrared waveguide optical parametric oscillator An integrated broad spectral band waveguide optical parametric oscillator (OPO) is disclosed. In accordance with a preferred embodiment of the present invention, a single pump laser is used to drive multiple oscillator (OPO) channels. The waveguide OPO is preferably... | 02/24/2009 |
| 7486435 | Multi-port optical parametric oscillator An optical parametric oscillator includes a source of coherent energetic pump optical signals and an optical resonator cavity which includes a set of optical parametric amplifying (OPA) crystals and a set of optical elements such as mirrors disposed along an optical... | 02/03/2009 |
| 7463410 | Optical frequency converter for non-polarized light Optical apparatus including an optical frequency conversion device, pumped by a non-polarized light beam. The apparatus may include a pump incident side, such as an optical fiber emitting non-polarized light beam, a polarization beam splitter to split the incident b... | 12/09/2008 |
| 7453626 | Four-wave mixing source of squeezed light for image processing and interferometry A four-wave mixing squeezed light source includes: a mixing medium having chi(3) non-linear characteristics including two atomic ground states coupled to each other by transitions through optically-excited states; a pump beam having a polarization and a frequency, s... | 11/18/2008 |
| 7436580 | Optical buffer employing four-wave mixing An optical buffer employing Bragg scattering (BS), in which two pump signals are combined with an input (data) signal in a four-wave mixing (FWM) medium to frequency convert the input signal into an idler signal, which is applied to a dispersive medium, in which the... | 10/14/2008 |
| 7408701 | Multi-frequency light source A multi-frequency light producing method and apparatus multiplies the number of optical channels present in an incident wavelength division multiplexed (WDM) signal light source by four-wave mixing (FWM) the WDM signal with at least one pump lightwave at least one t... | 08/05/2008 |
| 7405869 | Method and system of local oscillator signal generation Methods and apparatus for local oscillator generation are provided. In a method embodiment, a method of signal processing includes splitting a signal having a first frequency into at least a first portion and a second portion. The method also includes generating a s... | 07/29/2008 |
| 7405868 | Cavity-enhanced optical parametric amplification A simple and low-cost apparatus amplifies short optical pulses (e.g., in the femtosecond domain) to high pulse energies using energy stored in an enhancement cavity. The enhancement cavity is first filled with pump light from a pump laser; and a signal laser then di... | 07/29/2008 |
| 7403327 | Wavelength conversion element having multi-gratings and light generating apparatus using said element, and wavelength conversion element having cylindrical ferroelectric single crystals and light generating apparatus using said element A wavelength conversion element having multi-gratings free from damage propagation and a light generating apparatus using it, and a wavelength conversion element having multi-gratings to make a thermal distribution centrosymmetric, and being free from damage propaga... | 07/22/2008 |
| 7397598 | Light source unit and light irradiation unit In nonlinear optical crystal 183D, each step of wavelength conversion can be performed using another fundamental wave that is output from light output unit 1612, without using the fundamental wave whose output level has been attenuated after... | 07/08/2008 |
| 7388710 | Optical parametric amplifier An optical parametric amplifier of the invention comprises a nonlinear amplification section to which a signal light and a pump light are injected via a coupler. The nonlinear amplification section is constructed by connecting in multiple stages a plurality of polar... | 06/17/2008 |
| 7385752 | Disposal of residual radiation from a frequency-conversion process A frequency-conversion arrangement including one or more optically nonlinear crystals is located in an enclosure. Radiation residual from the frequency conversion is directed into an optical fiber having one end in the enclosure for receiving the residual radiation ... | 06/10/2008 |
| 7382523 | Beam-guiding and/or frequency-converting optical system and method for producing the same The present invention relates to a beam-guiding and/or frequency-converting optical system as well as to a method of manufacturing same, wherein a beam-emitting optoelectronic component (1), which comprises at least one beam-emerging surface (2) for th... | 06/03/2008 |
| 7359514 | Narrow-band single-photon source and QKD system using same A narrow-band single-photon source (10) is disclosed, along with a QKD system (200) using same. The single-photon source is based on spontaneous parametric downconversion that generates signal and idler photons (PS and PI) as an entangled photon pair. ... | 04/15/2008 |
| 7352506 | Method and system for sensing environmental characteristics A system for sensing characteristics of the environment is disclosed. Sensors utilize exponential growth of a signal initiated by interaction of a sensor element with characteristics of the environment. Specific substances in the environment can be detected. The sen... | 04/01/2008 |
| 7352505 | Device and method for converting an optical frequency To optimise the transformation rate (efficiency) in the optical frequency conversion of laser beams of ultra-short light pulses in optically non-linear media such as a crystal (56), a double refracting crystal (54) is arranged in the beam path before t... | 04/01/2008 |
| 7349149 | Doubly-resonant optical parametric oscillator with corresponding pump recycling The oscillator comprises two resonant cavities in which a non-linear crystal (3) is situated. The incident pumping radiation Rpe follows an emitting path across the crystal, the generated signal and complementary radiation carry out numerous emitte... | 03/25/2008 |
| 7349609 | Terahertz radiation generation and methods therefor Terahertz radiation generation systems and methods are implemented using a variety of methods and devices. According to an example embodiment of the present invention, method for generating terahertz radiation is implemented where the wavelength of an optical pulse ... | 03/25/2008 |
| 7339965 | Optoelectronic device based on an antiwaveguiding cavity A semiconductor optoelectronic device includes at least one cavity and one multilayered interference reflector. The cavity is designed preferably to possess properties of an antiwaveguiding cavity, where no optical modes propagate in the lateral plane. The existing ... | 03/04/2008 |
| 7339718 | Generation of terahertz radiation in orientation-patterned semiconductors A method for generating THz radiation comprises illuminating a semiconductor crystal with an optical pulse train. The semiconductor crystal comprises alternating parallel crystal domains, with each domain having a crystal orientation inverted with respect to adjacen... | 03/04/2008 |
| 7339722 | Hybrid nonlinear optical conversion and optical parametric oscillation A nonlinear frequency conversion system includes a first element including a first medium configured to perform type II birefringent phase matching (BPM) of a pump beam to provide corresponding seed beams having at least first and second polarization states. A secon... | 03/04/2008 |
| 7330653 | Quantum dense coding system A Quantum Dense Coding System. The system includes a source, a transmitter and a receiver. The source is capable of down-converting a pump photon into a signal photon and an idler photon and outputting probability amplitudes, the signal photon and the idler photon, ... | 02/12/2008 |
| 7330300 | Optical frequency mixer and method for the same An optical frequency mixer according to one embodiment of the present invention comprises a V-shaped resonant cavity including a first reflective surface, a second reflective surface and an output coupler, a pumping unit configured to emit a pumping wave to the lase... | 02/12/2008 |
| 7324267 | Four-wave-mixing based optical wavelength converter device A wavelength converter device is provided for generating a converted radiation at frequency ωg through interaction between at least one signal radiation at frequency ωs and at least one pump radiation at frequency ωp, including an... | 01/29/2008 |
