| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359347000 | Multiple pass | 11 |
| 20090052016 | 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 example, light is first passed through a gain fiber in a first polarization direction and then is passed through the gain fiber in a second polarization direction. The light exits the splitter combiner in the first polarization direction. | 02-26-2009 |
| 20090279167 | Device for amplifying high-energy ultrashort light pulses - A device for amplifying high-energy ultrashort light pulses, includes a generator ( | 11-12-2009 |
| 20100091359 | OPTICAL AMPLIFYING DEVICE - The present invention provides an optical amplifying device which can be easily downsized, increased in output, and stabilized. An optical amplifying device | 04-15-2010 |
| 20110043899 | SPATIAL FILTERS FOR HIGH AVERAGE POWER LASERS - A spatial filter includes a first filter element and a second filter element overlapping with the first filter element. The first filter element includes a first pair of cylindrical lenses separated by a first distance. Each of the first pair of cylindrical lenses has a first focal length. The first filter element also includes a first slit filter positioned between the first pair of cylindrical lenses. The second filter element includes a second pair of cylindrical lenses separated by a second distance. Each of the second pair of cylindrical lenses has a second focal length. The second filter element also includes a second slit filter positioned between the second pair of cylindrical lenses. | 02-24-2011 |
| 20110157689 | OFF AXIS WALK OFF MULTI-PASS AMPLIFIERS - The various laser architectures described herein provide increased gain of optical energy as well as compensation of optical phase distortions in a thin disk gain medium. An optical amplifier presented herein provides for scalable high energy extraction and gains based on a number of passes of the signal beam through a gain medium. Multiple, spatially separate, optical paths may also be passed through the same gain region to provide gain clearing by splitting off a small percentage of an output pulse and sending it back through the amplifier along a slightly different path. By clearing out the residual gain, uniform signal amplitudes can be obtained. | 06-30-2011 |
| 20110273766 | MULTI-PASS AMPLIFIER ARCHITECTURE FOR HIGH POWER LASER SYSTEMS - A main amplifier system includes a first reflector operable to receive input light through a first aperture and direct the input light along an optical path. The input light is characterized by a first polarization. The main amplifier system also includes a first polarizer operable to reflect light characterized by the first polarization state. The main amplifier system further includes a first and second set of amplifier modules. Each of the first and second set of amplifier modules includes an entrance window, a quarter wave plate, a plurality of amplifier slablets arrayed substantially parallel to each other, and an exit window. The main amplifier system additionally includes a set of mirrors operable to reflect light exiting the first set of amplifier modules to enter the second set of amplifier modules and a second polarizer operable to reflect light characterized by a second polarization state. | 11-10-2011 |
| 20120170112 | Multi-Pass Optical Apparatus - An apparatus includes a first plurality of concave reflecting surfaces; a second plurality of reflecting surfaces facing the first plurality of concave reflecting surfaces such that a region is defined between the first and second pluralities; and an input for an optical beam to enter the region and an output for the optical beam to exit the region. The first and second pluralities of reflecting surfaces are arranged relative to each other so that the optical beam is re-imaged at a reflecting surface of one of the pluralities after only one reflection from a reflecting surface of the other of the pluralities and so that overlap of two or more optical beams on each of the reflecting surfaces is avoided. | 07-05-2012 |
| 20130342896 | METHOD AND LASER OSCILLATOR FOR THE GENERATION OF A LASER BEAM - Method and laser oscillator for the generation of a laser beam—According to the invention with a view to adjusting, inside said laser oscillator ( | 12-26-2013 |
| 20150043057 | Optical Amplifier Arrangement - An optical amplifier which integrates a pre-amplifier and a power amplifier in a single rectangular active medium to enable amplification of low power ultra-short pulses to optimal power levels. A seed beam passes through the amplification medium along a first pre-amplification path making multiple traverses of the medium. It is imaged back along the first path to make a double pass of the medium as a pre-amplifier. The beam is then re-imaged into the medium again on a second power amplification path, making multiple traverses of the medium in a single pass. The paths are independent but overlap so that efficient power extraction is achieved. Embodiments based on all passive components are described. | 02-12-2015 |
| 359348000 | Regenerative | 2 |
| 20080225386 | Fiber laser arrangement with regenerative pulse amplification - A fiber laser arrangement with regenerative pulse amplification, having a femtosecond fiber oscillator as a pulse-generating unit, a fiber amplifier designed both as a pulse-amplifying and pulse-stretching device to amplify and to stretch the femtosecond pulses generated by the femtosecond fiber oscillator, a regenerative amplifier, which has a disk-shaped laser crystal as a gain medium, and which is designed to produce additional pulse stretching during the regenerative amplification, and a pulse compression device, which temporally compresses the amplified and time-stretched pulses. | 09-18-2008 |
| 20090103172 | Repetitively pulsed laser and amplifier with dual resonator for pulse-energy management - A regenerative amplifier includes a gain-medium that is optically pumped by CW radiation. The amplifier has primary resonator for amplifying pulses. The primary resonator has an optical switch for opening and closing the primary resonator. The amplifier has a secondary resonator that includes the gain-medium and a selectively variable attenuator, but not the optical switch. The optical switch and the variable attenuator are cooperatively controlled in response to repeated trigger-signals such that the amplifier delivers corresponding amplified pulses each having about the same energy independent of repetition frequency of the signals below some predetermined value. | 04-23-2009 |
