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| Number | Title | Issue Date |
| 7602546 | Laser oscillator To extend the temperature range for a stable operation without mode hopping and obtain a stable laser oscillation, a laser oscillator is provided. The laser oscillator includes: an optical circulator in which light incident on a first port is exited from the second ... | 10/13/2009 |
| 7599111 | Method of and device for amplifying a high-energy laser beam with no transverse lasing The invention relates to a method of amplifying a laser beam which includes steps consisting in performing an optical pumping of an amplifying crystal so as to inject into the crystal an optical pumping energy Etotal, amplifying the laser beam by means of... | 10/06/2009 |
| 7508579 | Double-pass fiber amplifier Several examples of double-pass fiber amplifiers including a polarization maintaining (PM) gain-fiber are disclosed. In each example, input and twice-amplified output are separated by an all-fiber, polarization-maintaining polarization splitter combiner. In one exam... | 03/24/2009 |
| 7440180 | Integration of rare-earth doped amplifiers into semiconductor structures and uses of same An integrated device is disclosed which has a substrate and a Rare-Earth Doped Semiconductor layer (REDS layer) integrated with the substrate. The REDS layer is patterned to define one or more optically amplifying structures each having a first I/O port for receivin... | 10/21/2008 |
| 7440181 | Double-pass fiber amplifier Several examples of double-pass fiber amplifiers including a polarization maintaining (PM) gain-fiber are disclosed. In each example, input and twice-amplified output are separated by an all-fiber, polarization-maintaining polarization splitter combiner. One example... | 10/21/2008 |
| 7359638 | Optical source generator for wavelength division multiplexing optical communication systems An optical source generator for wavelength-division-multiplexing optical communication systems includes a wavelength-division multiplexer/demultiplexer, optical amplifiers, and wavelength-dependent reflectors such as optical fiber-Bragg gratings or wavelength-indepe... | 04/15/2008 |
| 7289263 | Double-pass fiber amplifier Several examples of double-pass fiber amplifiers including a polarization maintaining (PM) gain-fiber are disclosed. In each example, input and twice-amplified output are separated by an all-fiber, polarization-maintaining polarization splitter combiner. The example... | 10/30/2007 |
| 7242520 | Method for optimizing output in ultrashort-pulse multipass laser amplifiers with selective use of a spectral filter A method for optimizing multipass laser amplifier output utilizes a spectral filter in early passes but not in later passes. The pulses shift position slightly for each pass through the amplifier, and the filter is placed such that early passes intersect the filter ... | 07/10/2007 |
| 7224505 | Manufacturing method of electro-optical apparatus substrate, manufacturing method of electro-optical apparatus, electro-optical apparatus substrate, electro-optical apparatus, and electronic instrument A manufacturing process of an electro-optical apparatus substrate is provided wherein a substrate is coated with a photosensitive resin. A first exposure process is executed with a first reticle to form an uneven portion on the substrate. Subsequently, a second expo... | 05/29/2007 |
| 7209500 | Stimulated Brillouin scattering mirror system, high power laser and laser peening method and system using same A laser system, such as a master oscillator/power amplifier system, comprises a gain medium and a stimulated Brillouin scattering SBS mirror system. The SBS mirror system includes an in situ filtered SBS medium that comprises a compound having a small negative non-l... | 04/24/2007 |
| 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 |
| 7193771 | Power scalable optical systems for generating, transporting, and delivering high power, high quality laser beams Power scalable, rectangular, multi-mode, self-imaging, waveguide technologies are used with various combination of large aperture configurations, 20, 50, 80, 322, 324, 326, 328, 330, 332, 334, 336, 338, Gaussian 360 and super-Gaussian 350 beam p... | 03/20/2007 |
| 7181097 | Methods of achieving optimal communications performance A system includes an optical transmitter that outputs an optical signal having a substantially Gaussian waveform and an optical receiver that is optically coupled to the optical transmitter and has an impulse response essentially matching the waveform. The impulse r... | 02/20/2007 |
| 7173757 | Broad-band light source using a semiconductor optical amplifier A broad-band light source using a semiconductor optical amplifier is provided. The broad-band light source includes the semiconductor optical amplifier including an active layer serving as a gain area, an under-cladding layer, an over-cladding layer, and antireflect... | 02/06/2007 |
| 7139119 | Fiber amplifier with suppression of amplified spontaneous emission A fiber amplifier module for amplifying a signal pulse includes an optically pumped double-pass fiber amplifier in which a fiber Bragg grating reflects an amplified pulse in between the first and second amplification passes, and transmits most forward-propagating am... | 11/21/2006 |
| 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 |
| 7110168 | Optical signal transmission apparatus including reflective gain-clamped semiconductor optical amplifier Disclosed are optical signal transmission apparatus including a reflective gain-clamped semiconductor optical amplifier and optical communication system using the optical signal transmission apparatus, which can improve modulation speed and optical power by effectiv... | 09/19/2006 |
| 7106501 | Fiber amplifier with suppression of amplified spontaneous emission A fiber amplifier module for amplifying a signal pulse includes an optically pumped double-pass fiber amplifier in which a fiber Bragg grating reflects an amplified pulse in between the first and second amplification passes, and transmits most forward-propagating am... | 09/12/2006 |
| 7095555 | Multiple pass Faraday rotation amplifier An apparatus for and a method of amplifying Faraday or Voigt rotation by passing light through a sample many times using multiple internal reflections and successive mirrored chambers that repeatedly send the light back through the sample. The sample is placed in a ... | 08/22/2006 |
| 7038769 | Characteristic monitoring method of pumping light source for optical amplification and optical amplifier A monitoring method is realized which is capable of detecting the optical power characteristic of a pumping light source with high accuracy at the operation time of an optical amplifier, wherein the optical amplifier is capable of performing a pumping light control ... | 05/02/2006 |
| 7012940 | Laser resonator and adjustment method The present invention has the object of offering a laser resonator capable of maintaining high amplification efficiency even if the thermal lensing effect occurring in the laser medium varies during operation or over repeated operation and suspension of the laser de... | 03/14/2006 |
| 7006283 | Three-dimensional optical amplifier structure The present invention relates to a multi-pass three-dimensional amplifier structure in which a beam of light traverses an amplifier medium multiple times via distinct multiple paths. The distribution of the multiple paths being such that the volume occupied by the m... | 02/28/2006 |
| 6965472 | Nonreciprocal optical element with independent control of transmission opposite directions A nonreciprocal optical element and method for operating it to effect separate control of intensity and phase (or optical path length) of counter propagating beams over a very wide range. The nonreciprocal optical element includes a circulator for routing a first si... | 11/15/2005 |
| 6937377 | Dual lamp projection system An illumination system is disclosed, which includes a first light source and a second light source configured to emit light when the first light source is not emitting light. A polarizing element accepts light from the first and second light sources. The polarizing ... | 08/30/2005 |
| 6937388 | L-band optical amplifier Disclosed is an L-band optical amplifier for amplifying optical signals with the wavelength band of the L-band. The L-band optical amplifier comprises an optical-amplifying section for emitting spontaneous emission and for amplifying the optical signals by pumping o... | 08/30/2005 |
| 6919986 | Nonlinear polarization amplifiers in nonzero dispersion shifted fiber A broadband fiber transmission system includes a transmission line with at least one zero dispersion wavelength λo and transmits an optical signal of λ. The transmission line includes a distributed Raman amplifier that amplifies the optical signal throu... | 07/19/2005 |
| 6920253 | Optical modulator based on a microdisk resonator A modulator having a waveguide and a microdisk resonator is disclosed. The waveguide has an input port for receiving a light signal of wavelength λ and an output port for transmitting modulated light. The microdisk resonator has a resonance at λ and is coupled to ... | 07/19/2005 |
| 6917464 | Unpolarized multi-lambda source Disclosed is a multi-lambda source for outputting an optical signal having a plurality of channels, the multi-lambda source comprising an optical fiber amplifier, having a back and front end, for amplifying an optical signal received from the back end and outputting... | 07/12/2005 |
| 6894828 | Power scalable waveguide amplifier and laser devices The present invention is directed to guided wave systems, beam transport and waveguide techniques. The invention may comprise passive or active, hollow and dielectric core self-imaging mode wave guide systems, beam amplifiers (10, 40), laser resonators (70... | 05/17/2005 |
| 6831779 | Method and apparatus for stabilizing a high-gain, high-power single polarization EDFA A high-gain, saturated output, double-pass, fault-tolerant optical amplifier has an extended range of stability, output power, and efficiency and fall back modes of operation. The optical amplifier is typically configured in a two-stage polarization maintaining conf... | 12/14/2004 |
| 6728273 | Ultrashort-pulse laser machining system employing a parametric amplifier A method and apparatus are provided for increasing the energy of chirped laser pulses to an output in the range 0.001 to over 10 millijoules at a repetition rate 0.010 to 100 kHz by using a two stage optical parametric amplifier utilizing a bulk nonlinear crystal wh... | 04/27/2004 |
| 6700698 | Multi-pass optical amplifier A multi-pass optical amplifier system is provided comprising an amplifier medium (20) and at least one relay imaging telescope (18, 24) for imaging light from the amplifier medium onto a primary light directing optical component, such as a mirror (26, 29)... | 03/02/2004 |
| 6654163 | Optical amplifier arrangement for a solid state laser An optical amplifier arrangement, including an amplifying medium, which exhibits an approximately rectangular cross section with a long edge and a short edge, as well as at least two highly reflecting mirrors, between which the amplifying medium is dispos... | 11/25/2003 |
| 6476959 | Optical pulse synthesis using brillouin selective sideband amplification Techniques for producing optical pulses based on Brillouin selective sideband amplification by using a common modulation control signal to modulate both a signal beam to produce multiple sideband signals and a single pump beam to produce multiple pump bea... | 11/05/2002 |
| 6456429 | Double-pass optical amplifier Novel optical amplifier designs are disclosed. The optical amplifier generally comprises an amplification section having an anti-reflection coating on a first end face and a reflector optically coupled to a second end face. The amplification section of th... | 09/24/2002 |
| 6392791 | Optical system and method for performing a defined function on an optical beam having at least one of a minimized volume or reduced operating temperature The present invention provides optical systems and methods that use a plurality of optical reflectors to fold the optical path of an optical beam used in the optical system. By folding the optical path of the optical beam, the optical system and method of... | 05/21/2002 |
| 6384966 | Multiple pass optical amplifier with thermal birefringence compensation The 4-pass amplifier comprises an optical isolator (7), a polarizing beamsplitter (2), a gain material (3) and a first and a second reflecting element (5, 6). It further comprises means (4) for modifying the polarization state of a light beam after passin... | 05/07/2002 |
| 6347007 | Semiconductor laser high power amplifier system A high power laser optical amplifier system for material processing comprises multiple stage fiber amplifiers with rejection of propagating ASE buildup in and between the amplifier stages as well as elimination of SBS noise providing output powers in the ... | 02/12/2002 |
| 6344913 | Optical clock division A clock signal at a divided clock rate is obtained from an optical signal stream at a higher clock rate. The optical signal stream at the higher clock rate is applied to an all-optical non- linear gate. There is feedback from the first output of the gate ... | 02/05/2002 |
| 6330105 | Double-pass fully isolated broadband optical signal source for fiber optic interferometric sensors A pump light source provides pump light to an optical fiber arranged to guide the pump light to a first optical isolation device. Light output by the first optical isolation device is input to a wavelength division multiplexer. A gain fiber is connected t... | 12/11/2001 |
