| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359349000 | Beam combination or separation | 10 |
| 20080259438 | BIDIRECTIONAL OPTICAL AMPLIFIER - A bidirectional amplification system and method are disclosed. A single optical line amplifier and isolation loss filters are used to amplify signals in both the east and west directions with sufficient gain along a fiber. | 10-23-2008 |
| 20080304139 | Laser Phase Difference Detecting Device and Laser Phase Control Device - A phase difference detecting device includes a splitter for splitting laser beams into a first group which will travel along a first path and a second group which will travel along a second path, a beam selection/extraction unit for selecting, as reference light, one beam from the first group to allow it to pass therethrough, a path length changing unit for changing the length of the first path, a combining unit for combining the reference light and beams which construct the second group to produce interference light, and a detector for detecting the intensity of the interference light. The device changes the length of the first path using the path length changing unit to detect a path length which maximizes the intensity of the interference light for each of the beams which construct the second group, and determines a phase difference among the beams from the detected path length. | 12-11-2008 |
| 20100142034 | DIVIDED-PULSE AMPLIFICATION OF SHORT PULSES - To avoid harmful nonlinear effects in the amplification of short optical pulses, an initial pulse is divided into a sequence of lower-energy temporally spaced pulses that are otherwise identical to the original pulse. The low-intensity pulses are amplified and then recombined to create a final amplified output pulse. | 06-10-2010 |
| 20100177379 | Splitter/Combiner and Waveguide Amplifier Incorporating Splitter/Combiner - Several embodiments of waveguide amplifiers incorporating a network of waveguides, signal splitters, solid state amplifiers and signal combiners are disclosed. The signal splitters and combiners have similar structures including parallel input and exit ports. In some embodiments, the solid state amplifiers are enclosed within the waveguide amplifier. | 07-15-2010 |
| 20110043900 | METHOD AND SYSTEM FOR HOMOGENIZING DIODE LASER PUMP ARRAYS - An optical amplifier system includes a diode pump array including a plurality of semiconductor diode laser bars disposed in an array configuration and characterized by a periodic distance between adjacent semiconductor diode laser bars. The periodic distance is measured in a first direction perpendicular to each of the plurality of semiconductor diode laser bars. The diode pump array provides a pump output propagating along an optical path and characterized by a first intensity profile measured as a function of the first direction and having a variation greater than 10%. The optical amplifier system also includes a diffractive optic disposed along the optical path. The diffractive optic includes a photo-thermo-refractive glass member. The optical amplifier system further includes an amplifier slab having an input face and position along the optical path and separated from the diffractive optic by a predetermined distance. A second intensity profile measured at the input face of the amplifier slab as a function of the first direction has a variation less than 10%. | 02-24-2011 |
| 20120002272 | EXTERNAL-CAVITY ONE-DIMENSIONAL MULTI-WAVELENGTH BEAM COMBINING OF TWO-DIMENSIONAL LASER ELEMENTS - An external-cavity one-dimensional multi-wavelength beam combiner that performs wavelength beam combining along a stacking dimension of a laser stack formed of a plurality of laser arrays, each laser array configured to generate optical radiation having a unique wavelength, and each of the plurality of laser arrays including one or more laser emitters arranged along an array dimension of the laser stack. The multi-wavelength beam combiner includes an optical imaging element configured to image each of the laser emitters along a slow axis of the laser emitters, an optical focusing element arranged to intercept the optical radiation from each of the plurality of laser arrays and combine the optical radiation along a stacking dimension of the laser stack to form a multi-wavelength optical beam, and a diffraction element positioned at a region of overlap of the optical radiation to receive and transmit the multi-wavelength optical beam. | 01-05-2012 |
| 20140268314 | Three-beam Coherent Beam Combining System | 09-18-2014 |
| 20140376085 | PASSIVE DEVICE AND METHOD FOR THE COHERENT COMBINATION OF A PLURALITY OF OPTICAL AMPLIFIERS - A passive device for the coherent combination of at least two optical amplifiers, includes an interferometer having at least four branches having optical elements for separating and combining polarization, the elements having four inlet-outlet ports that are respectively connected to a branch. The first branch includes a first polarization element, a first optical amplifier and a first mirror; the second branch includes a second polarization element, a second optical amplifier and a second mirror; the third branch includes a third polarization element and a third mirror; the fourth branch is an inlet-outlet branch of the interferometer. The three polarization elements are designed such that a polarized optical beam entering respectively into the first, second or third branch and reflected by the mirror at the end thereof forms a polarized optical beam leaving the branch with a polarization that is orthogonal to that of the polarized optical beam entering the branch. | 12-25-2014 |
| 20150146282 | Wavelength Selective External Resonator and Beam Combining System for Dense Wavelength Beam Combining Laser - Wavelength-selective external resonators can be used to greatly increase the output brightness of dense wavelength beam combining (DWBC) system beams by stabilizing the wavelengths of the beams emitted by the individual emitters of the DWBC laser source. The present invention pertains to external resonant cavities that utilize thin-film filtering elements as wavelength-selective elements in external resonators. The present invention further pertains to particular embodiments that utilize thin-film filtering elements in DWBC systems as both output beam coupling elements and wavelength selective elements. The present invention provides advantages over the prior art that include decreased cost, increased fidelity of wavelength selection, and increased wall plug efficiency. | 05-28-2015 |
| 20160033850 | COMMON-PATH NONCOLLINEAR OPTICAL PARAMETRIC AMPLIFIER - Systems and methods for providing a noncollinear optical parametric amplifier (NOPA). Two approaches for classes of NOPA are described: phase-mask NOPA and Wollaston NOPA. | 02-04-2016 |
