A chip laser amplifier

Abstract

Disclosed in the invention is a sheet type laser amplifier comprising a sheet box, lamp boxes, and a frame. A gain medium is fixedly connected inside the sheet box. Each lamp box contains a xenon lamp and a piece of separator glass. The sheet box includes an upper end surface, a lower end surface, an incident surface, an exit surface, and two pumping surfaces. Two lamp boxes are arranged and contain a first lamp box and a second lamp box. The sheet box is fixed connected to the center of the frame; the first lamp box and the second lamp box are opposite to the two pumping surfaces of the sheet box; and the lamp boxes and the frame are fixedly connected. The xenon lamp of the first lamp box and the xenon lamp of the second lamp box are distributed in an asymmetric and staggered mode along the laser main light path direction. With the laser amplifier, the gain edge-collapsing effect can be suppressed. The structure is compact, the small-signal gain coefficient is large, and the gain uniformity is good.

Description

Technical field [0001] The invention relates to the technical field of high-power solid-state lasers, and in particular to a sheet laser amplifier. Background technique [0002] In the development of high-power solid-state laser drivers for more than 30 years, laser driver technology has been developed rapidly, especially under the excitation of laser inertial confinement fusion technology, important units and laboratories in many countries around the world have been A lot of research has been done on ultra-high power laser drivers of various levels, such as Livermore Laboratory in the United States, Rimel Laboratory in France, and Laser Engineering Center of Osaka University in Japan. Among them, the high-power laser driver developed by Livermore Laboratory in the United States represents the highest level in the world. Since the 1970s, solid-state laser systems such as Janus, Argus, Shiva, Nova, and NIF have been built. Large-aperture chip laser amplifiers have achieved success...

AI Technical Summary

Problems solved by technology

[0003] The important parameters for measuring chip amplifiers are amplifier size, small signal gain coefficient, gain uniformity, etc. The pump source of the amplifier has a greater impact on the size of the amplifier. Currently, the commonly used pump sources for chip laser amplifiers mainly include xenon lamps and Laser diodes, laser diodes have the advantages of small size and easy integration, but due to the immature technology, the price of laser diodes is expensive and the uniformity is difficult to do well. Although xenon lamps are large in size, they are cheap and are the current choice for chip laser amplifiers. main choice

[0004] Since the chip laser amplifier requires high gain output, in the case of high gain, due to the existence of the amplified spontaneous emission effect, the gain of the laser amplifier will appear obvious collapse, which makes the wavefront distortion of the laser after passing through the amplifier obvious, which affects the laser. Amplifier use

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