Regenerative laser amplifier based on slab gain medium

A regenerative amplifier and gain medium technology, applied to lasers, laser components, phonon exciters, etc., can solve problems such as beam quality deterioration and output power limitation

Inactive Publication Date: 2016-05-11
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is how to overcome the limitation of the output power of the current rod-shaped gain medium laser regenerative amplifier and the problem of beam quality deterioration under high power

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  • Regenerative laser amplifier based on slab gain medium
  • Regenerative laser amplifier based on slab gain medium
  • Regenerative laser amplifier based on slab gain medium

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Embodiment Construction

[0045] The present invention will be further described in detail below with reference to the drawings and embodiments. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0046] The invention discloses a laser regenerative amplifier based on a slab gain medium, which includes

[0047] A seed light source 1 and a beam coupling module 15 that performs shaping processing on the laser pulse emitted by the seed light source 1;

[0048] The pump module is used to generate pump light to provide energy for the laser in the regenerative cavity;

[0049] Regeneration resonant cavity is used to oscillate and reflect the injected laser pulse multiple times to increase the energy of the laser pulse to obtain the target laser pulse;

[0050] An optical isolation module that injects the laser shaped by the beam coupling module 15 into the regenerated resonant cavity, and separates the target laser pulse emitted from th...

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Abstract

The invention discloses a regenerative laser amplifier based on a slab gain medium. The regenerative laser amplifier comprises a seed light source (1), a light beam coupling module (15), a light isolation module, a regenerative resonator and a pump module. The regenerative resonator comprises the slab gain medium (11). Two end surfaces of the slab gain medium (11) are polished and are used for penetration of pump light and laser. The upper large surface and the lower large surface of the slab gain medium are connected with a cooling device, thereby realizing effective cooling. Because the slab gain medium has relatively large pump volume and relatively large heat radiation area, heat can be distributed on the whole slab gain medium (11) and furthermore high-efficiency cooling through the two large surfaces is realized, thereby realizing relatively low integral heat effect influence. Furthermore the relatively large cross section can bear higher laser pulse peak power. Therefore the regenerative laser amplifier based on the slab gain medium can realize output of amplified regenerative laser with high average power and high light beam quality.

Description

Technical field [0001] The invention relates to the technical field of all-solid-state laser pulse amplification, and more specifically to a laser regeneration amplifier based on a slab gain medium. Background technique [0002] Laser pulses with pulse widths ranging from femtoseconds to 100 picoseconds can be obtained through mode-locking technology, but their single pulse energy is often on the order of nanojoules, which limits its application in certain fields. In order to obtain higher single pulse energy and laser peak power, it is often necessary to amplify the seed laser output by the mode-locked oscillator. Commonly used laser amplifiers include traveling wave amplifiers and regenerative amplifiers. Travelling wave amplifiers are seed lasers that pass through the laser gain medium in a single-pass or multi-pass manner, and their gain is relatively limited. In the regenerative amplifier, the seed laser pulses can go back and forth in the regenerative cavity dozens of time...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/086H01S3/115
Inventor 刘可陈莹宗楠彭钦军薄勇杨晶许祖彦
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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