Conductive cooling laser main surge power amplifier
A power amplifier and conduction cooling technology, applied in the field of lasers, can solve the problems of small mode volume, difficulty in obtaining high beam quality, high efficiency, high pulse energy or high average power output, and inability to fully utilize the laser medium, etc., to achieve improved Laser output efficiency, good beam quality, and high pump extraction efficiency
Inactive Publication Date: 2008-03-26
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
The plate-shaped laser medium transmitted by the "zigzag" optical path can eliminate the first-order thermal focusing along the thickness direction through the average temperature, and improve the beam quality. However, when using a stable resonator, due to its small mode volume, the laser cannot be fully utilized. medium, so high efficiency output cannot be obtained
Although the traditional unstable resonator can obtain a large mode volume, the output is a ring laser beam
Although the prism resonator can improve the alignment misalignment, because it is a linear cavity, it cannot obtain high beam quality laser output
[0006] In short, it is difficult to obtain high beam quality, high efficiency, high pulse energy or high average power output in the above methods
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[0027] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, which should not limit the protection scope of the present invention.
[0028] First please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are structural schematic diagrams of the oscillator and amplifier of the conduction-cooled laser main oscillation power amplifier embodiment of the present invention. It can be seen from the figure that the conduction-cooled laser main oscillation power amplifier of the present invention is composed of an oscillator and an amplifier:
[0029] The composition of the oscillator includes a slab laser crystal 2 whose end face is cut into a Brewster angle. In the length direction of the slab laser crystal 2, one end is an output convex mirror 1 with variable reflectivity, and the other end is a polarizing mirror 1 in turn. plate 3, Q switch 4, quarter-wave plate 5 and concave rear cavity mirror 6, one side of the slab laser cr...
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Abstract
This invention relates to a laser master oscillation power amplifier cooled by conduction characterzing in taking a laser batten of zigzag optical transmission as a center to constitute a non-stable resonator by a variable-reflectivity convex output device and a concave back cavity mirror along the gain length direction of the batten, and a laser diode array and a cylinder lens are set at one side of the batten gain medium, and the laser medium is a rectangular batten, the pump is at either side and the up and down sides are cooled by conduction.
Description
technical field [0001] The invention relates to a laser, in particular to a conduction-cooled laser main oscillation power amplifier. It can realize high efficiency, high beam quality and high pulse energy laser output. Background technique [0002] Achieving conduction cooling with high beam quality, high pulse energy, and high-efficiency laser output has become an important technical indicator for the development of space lasers in recent years, and it is also an important driving force for the development of space lasers. Several common pumping methods in the past are as follows: [0003] Side-pumped rod laser media and stable resonators. The traditional side-pumped rod-shaped laser medium operates at high average power. Due to severe thermal lens and thermally induced birefringence, the output laser is distorted, and it is difficult to obtain high beam quality laser output. [0004] The side pumping goes straight through the plate-shaped laser medium and the stable ca...
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IPC IPC(8): H01S3/00H01S3/06H01S3/08H01S3/10G02F1/35
Inventor 马秀华毕进子侯霞陈卫标
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI