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| Number | Title | Issue Date |
| 7397018 | Amplitude and phase controlled adaptive optics system An adaptive optics system is provided. The system includes a light source, a pair of deformable mirrors and a detection module. The light source is configured to provide an outgoing beam. The outgoing beam has an amplitude and a phase. The first deformable mirror is... | 07/08/2008 |
| 7391558 | Laser amplifier power extraction enhancement system and method A high extraction efficiency laser system. The novel laser system includes a master oscillator for providing a laser beam, an amplifier adapted to amplify the laser beam, and an aberrator for aberrating the laser beam to prevent the formation of caustic intensity pa... | 06/24/2008 |
| 7369482 | Optical pick-up aberration correcting mirror, aberration correcting method and optical pick-up It is an object of the invention to provide an aberration correcting mirror which has a small size, power saving, a low voltage, a low price and high precision. In particular, it is an object to provide a practical mirror for correcting a spherical aberration. | 05/06/2008 |
| 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 |
| 7253945 | Amplitude dividing type laser amplification apparatus An optical amplification apparatus includes a polarizing beam splitter for reflecting a portion of an incident light and transmitting a remaining portion of the incident light, depending upon a polarized state of the incident light, at least two optical amplificatio... | 08/07/2007 |
| 7193772 | Conductively cooled liquid thermal nonlinearity cell for phase conjugation and method A thermal nonlinear cell and method. The cell includes a substantially planar nonlinear medium and a mechanism for removing thermal energy from the medium in a direction substantially orthogonal to said medium. In one embodiment, the mechanism for removing thermal e... | 03/20/2007 |
| 7110171 | Relay telescope including baffle, and high power laser amplifier utilizing the same A laser system includes an optical path having an intracavity relay telescope with a telescope focal point for imaging an output of the gain medium between an image location at or near the gain medium and an image location at or near an output coupler for the laser ... | 09/19/2006 |
| 7038791 | Signal-to-noise ratio tuned adaptive optics control system An improved, adaptive optics control system having a signal-to-noise ratio-tuned wavefront corrector is disclosed. The system comprises a wavefront corrector, a wavefront sensor, a wavefront reconstructor and a wavefront controller. The wavefront corrector has a sur... | 05/02/2006 |
| 6995897 | Deformable mirror and information device having the deformable mirror A deformable mirror according to the invention comprises a substrate, a reflector which is supported by said substrate and the shape of whose reflecting areas is variable, and a plurality of drive units for independently driving a plurality of regions of the reflect... | 02/07/2006 |
| 6906839 | System and method for recovering phase information of a wave front A system and method for recovery of phase information from recorded intensity values is disclosed. In one aspect, a phase filter is placed in a plane, which may be the back focal plane (BFP) of a lens used for observing an object. The phase filter changes the phase ... | 06/14/2005 |
| 6385228 | Coherent beam combiner for a high power laser A phase conjugate laser mirror employing Brillouin-enhanced four wave mixing allows multiple independent laser apertures to be phase locked producing an array of diffraction-limited beams with no piston phase errors. The beam combiner has application in l... | 05/07/2002 |
| 6049402 | Multiplexed phase-conjugate holographic data storage using a buffer hologram An optical storage system, which includes a temporary buffer and an optical storage medium, allows the practical combination of phase-conjugation and hologram multiplexing. The temporary buffer receives an object light beam and a first reference light bea... | 04/11/2000 |
| 6020990 | R.F. signal summing using non-linear optical phase conjugation A system for summing RF modulated optical signals. In order to compensate for performance degradation at the summing junction, the system utilizes four-wave mixing elements to provide the phase conjugates of each of the modulated RF signals. The phase con... | 02/01/2000 |
| 5886800 | Large optics compensated imaging systems A technique for correcting wavefront aberrations introduced by large primary optical elements in portions of the electromagnetic spectrum. The aberrations of the primary element are first transferred to a beacon beam and this aberrated beam is interfered ... | 03/23/1999 |
| 5880873 | All solid-state SBS phase conjugate mirror A stimulated Brillouin scattering (SBS) phase conjugate laser mirror uses a solid-state nonlinear gain medium instead of the conventional liquid or high pressure gas medium. The concept has been effectively demonstrated using common optical-grade fused si... | 03/09/1999 |
| 5798853 | Optical communication system compensating for chromatic dispersion and phase conjugate light generator for use therewith An optical communication system compensating for chromatic dispersion and a phase conjugate light generator for use therewith. The system includes an optical transmitter which receives an input signal and transmits signal light over an optical transmissio... | 08/25/1998 |
| 5729380 | Loop phase-conjugate mirror for depolarized beams A loop four-wave mixing phase conjugator that can be used with depolarized signal beams comprises a polarization separator, a polarization mixer, an optical diode, a gain medium and relay optics that together form a unidirectional laser resonator. In oper... | 03/17/1998 |
| 5726282 | Light emitting diode A class of rigid rod and latter polymers having light emitting capability is provided. Included in this class of polymers are those having novel repeating structural units. These rigid rod and ladder polymers are employed in light emitting diodes.... | 03/10/1998 |
| 5726795 | Compact phase-conjugate mirror utilizing four-wave mixing in a loop configuration A compact loop four-wave mixing phase conjugator that can be used in practical optical applications comprises a reflective nonlinear cell, relay optics, an optical gain medium, and an optical diode that together form a unidirectional ring laser resonator.... | 03/10/1998 |
| 5557431 | Real-time compensated imaging system and method using a double-pumped phase-conjugate mirror An adaptive optics imaging system uses a double pumped phase conjugate mirror (DPCM) to compensate for phase, amplitude or polarization aberrations imposed upon a multi-pixel object beam. A remote reference beam is used to sample an aberrating medium thro... | 09/17/1996 |
| 5535041 | Device for stabilizing the reflectivity of mirrors having phase conjugation through stimulated brillouin scattering at high pulse repetition rate A phase conjugation mirror including a non-linear medium (1) and a focusing lens (2), in which a beam to be reflected (F1) is displaced relative to a non-linear medium. The displacement is obtained through displacement of the focusing lens and has applica... | 07/09/1996 |
| 5535024 | Photorefractive holographic interference novelty filter A novelty filter utilizes self-nulling and self-aligning of reflection and transmission phase conjugate beams. A photorefractive crystal is arranged so that the contributions to the phase conjugate are equal and opposite in the steady state to produce des... | 07/09/1996 |
| 5402261 | Phase conjugation device The phase conjugation device includes at least one non-linear medium and an optical focussing system producing at least two focal points within the non-linear medium and capable of focussing light at these two points.... | 03/28/1995 |
| 5396368 | Flexible rejection filter (U) A flexible rejection filter removes coherent radiation from an incoming beam of light. The filter includes a beamsplitter for dividing the transmitted portion into first and second beams. A photorefractive crystal in the paths of the first and second beam... | 03/07/1995 |
| 5379147 | Dye laser amplifiers A dye laser amplifier is formed by a stimulated brillouin scattering (SBS) dye cell which receives both dye laser light to be amplified and a pump beam along a common optical path. Phase conjugation and amplification of received energy are reflected from ... | 01/03/1995 |
| 5373381 | Terahertz repetition rate optical computing systems, and communication systems and logic elements using cross-phase modulation based optical processors Optical communication systems, optical computing systems and optical logic elements which rely on the phenomina of cross-phase modulation to alter and control, either or simultaneously, the spectral, temporal or/and spatial properties of ultrashort light ... | 12/13/1994 |
| 5339371 | Optical interconnection networks and processes Disclosed are an optical interconnection network and process, having a phase-conjugate mirror and input and output side channels. In the network, time-reversed wave, of a light beam propagated through the output side channel, is generated in the phase-con... | 08/16/1994 |
| 5337170 | Quadratic optical processor for reducing multiplicative noise and other uses A degenerate four-wave mixing arrangement employs a photorefractive crystal as a real time holographic recording medium to record a hologram of the noisy optical signal. The signal passes through the crystal and is phase conjugated by a self pumped barium... | 08/09/1994 |
| 5303032 | Method of measuring the time for forming refractive index grating of a photo-nonlinear medium A laser beam with a wavelength λ emitted from a laser beam source is split into first and second pump beams and a probe beam. The first and second pump beams are incident on light incident surfaces of a photo-nonlinear medium from opposing directions on ... | 04/12/1994 |
| 5287213 | Barium strontium titanate photorefractive device and method for making the same The invention relates to a photorefractive device made of single crystal of which the chemical composition substantially is Ba1-x Srx TiO3 (0.01 | 02/15/1994 |
| 5255283 | Process for making a custom phase-conjugated circular mirror to be used in a laser resonator that will suit specifications of a user and a custom phase-conjugated circular mirror made according to the process A process for making a custom phase-conjugated circular mirror to be used in a laser resonator that will suit specifications of a user is provided. The mirror reverses wavefront of one particular input beam .PSI.o (x) determined by the user, th... | 10/19/1993 |
| 5170268 | Polarization-independent energy exchange and phase conjugation A polarization independent energy exchanger transfers optical energy from a first coherent beam of optical energy to a second coherent beam of optical energy where the second beam is coherent with respect to the first beam, the second beam is counterpropa... | 12/08/1992 |
| 5130849 | Method and apparatus for energy transfers between optical beams using near-bandgap electrorefractive effect Enhanced energy transfers are achieved between optical beams by operating at wavelengths in the near-bandgap region of a photorefractive material, and employing an electrorefractive effect previously proposed only for single beams. An electric field is ap... | 07/14/1992 |
| 5113282 | Dual light valve system with selective decoupling of light valves Apparatus for selectively limiting the response of an auxiliary liquid crystal light valve which is used in a dual liquid crystal light valve laser optics system for correcting inherent liquid crystal light valve distortion by isolating an atmospheric ref... | 05/12/1992 |
| 5038359 | Self-pumped, optical phase conjugation method and apparatus using pseudo-conjugator to produce retroreflected seed beam An optical input beam is transmitted through a non-linear medium capable of two-wave mixing gain by photorefractive, Brillouin, Raman, or other non-linear optical mechanism. A psuedo-conjugator retroreflects the input beam which has passed through the med... | 08/06/1991 |
| 5023477 | Transient energy self-pumped conjugator and method Self-pumped phase conjugation is achieved for optical beams with very short pulse durations by a transient energy transfer mechanism. A probe beam is transmitted through a non-linear optical medium, generating a noise beam from the medium. The probe and n... | 06/11/1991 |
| 4991177 | Laser beam clean-up using mutually pumped phase conjugation A mutually pumped phase conjugator (MPPC) is used to remove spatial distortions from a high power laser beam. The high power beam with its "dirty" spatial profile is directed into one side of the MPPC. A spatially clean beam at the same nominal frequency ... | 02/05/1991 |
| 4966443 | Light beam scanner A light beam scanner for scanning a light beam not by using an optical part such as a rotary polygon mirror or a galvanometer but by using a phase-conjugate element (or phase-conjugate mirror) having a non-linear light effect to establish a phase conjugat... | 10/30/1990 |
| 4958908 | Bandwidth-preserving brillouin phase conjugate mirror and method A coherent input beam from a laser is fed into a Brillouin-enhanced four wave mixer which generates a phase conjugated seed beam in counterpropagation with the input beam. A brillouin amplifier is provided between the laser and four wave mixer to transfer... | 09/25/1990 |
| 4949056 | Unconventional adaptive optics An improved adaptive optics system is disclosed for correcting atmospheric phase aberrations. A satellite (10) laser beacon is operated at the Stokes shifted Raman wavelength. After passing through the atmosphere (A), the signal is phase conjugated (16) a... | 08/14/1990 |
