Efficient and compact end-pumped slab laser amplifier setup
A laser amplifier and end-pumping technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of high cost, inability to further improve the extraction efficiency, complex structure of the amplifier device, etc., to achieve high-power laser amplification, The effect of increasing the number of folds through the slat laser medium, reducing complexity and adjustment difficulty
Active Publication Date: 2015-11-04
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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[0007] The purpose of the patent of the present invention is to solve the technical problems of existing amplifier devices such as complex structure, high cost, and inability to further improve extraction efficiency.
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[0031] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0032] Such as image 3 , 4 The shown embodiment 1 is an efficient and compact end-pumped slab laser amplifier device, which includes a laser medium 1, a first cavity mirror 3-01, a second cavity mirror 3-02, and a first pump source 4 -01 and the second pump source 4-02.
[0033] The laser medium 1 is set in a slab shape with length≥width>height, and the material of the slab laser medium 1 can be crystal, glass or ceramics doped with certain ions, specifically including Nd:YAG, Nd:YVO 4 , Nd:GGG, Nd:YLF, Nd:YAP, Nd:S-FAP, Yb:YAG, Yb:YVO 4 , Yb:GGG, Yb:YLF, Yb:YAP, Yb:S-FAP crystal, ruby, titanium sapphire, Nd-doped ion ceramics, Yb-doped ion ceramics, Nd-doped ion glas...
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The invention provides a high-efficiency compact end surface pumping lath laser amplifier apparatus. The laser medium of the apparatus is lath-shaped and meets the following requirements: a length is greater than or equal to a width, and the width is greater than a height. A first cavity mirror and a second cavity mirror are flat mirrors and are respectively arranged to be opposite to two length*height surfaces of the laser medium; the cross section of the first cavity mirror is trapezoid-shaped, an upper bottom surface with quite a small area faces the laser medium, a lower bottom surface with a quite large area faces a first pumping source, and pumping light generated by the first pumping source is irradiated to the laser medium through the first cavity mirror; and seed lasers, after being reflected through the inclined side surface of the first cavity mirror, are injected to and pass through the laser medium, and are injected to the laser medium again after being reflected by the second cavity mirror, such that after multiple to-and-fro reflection between the first cavity mirror and the second cavity mirror and multiple penetration into the laser medium, the seed lasers are reflected and led out through the other inclined side surface of the first cavity mirror. The apparatus combines cavity mirrors with seed laser injection / lead-out reflectors and has the advantages of high efficiency, simple structure, compactness, good stability and the like.
Description
technical field [0001] The invention relates to the field of all solid-state lasers, in particular to an efficient and compact end-pumped slab laser amplifier device. Background technique [0002] All-solid-state lasers (DPLs) pumped by laser diodes (LDs) have been widely used due to their high conversion efficiency, compact structure, stable system, long service life, and easy maintenance. Among them, the all-solid-state laser based on the main oscillator-power amplifier (MOPA) is an important way to achieve high-power and high-beam-quality laser output because it combines the advantages of laser oscillators and laser amplifiers. Compared with the rod-shaped laser medium traditionally used in laser amplifiers, the slab-shaped laser medium has a large ratio of width to thickness, and its excellent heat dissipation performance can effectively reduce thermal lens and thermally induced birefringence effects. On the premise of ensuring high beam quality higher output power can ...
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IPC IPC(8): H01S3/16H01S3/08H01S3/081
Inventor 薄勇郑建奎宗楠李芳琴涂玮彭钦军许祖彦
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI