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All-solid-state picosecond laser amplifier

A picosecond laser and amplifier technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems that the thermal depolarization effect cannot meet high average power and high beam quality, and achieve high picosecond laser output, The effect of low heat output rate and wide source

Active Publication Date: 2013-04-03
BEIJING UNIV OF TECH
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Problems solved by technology

However, although the first laser crystal doped with Nd:YAG ions has the advantages of high gain, wide sources, and low price, its severe thermal depolarization effect cannot meet the requirements of high average power and high beam quality.

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0033] Such as figure 2 Shown, the structure diagram of all-solid-state picosecond laser amplifier in the present invention, comprises seed source; The seed light that the first film polarizer 7, the second film polarizer 8, Faraday rotator 5 and λ / 2 wave plate 6 constitute and the amplifying light deriving device; the first pumping light source; the regenerative cavity; the two cavity mirrors of the regenerative cavity include a first concave mirror 1 and a second concave mirror 11, and a general Kerr cell 2, first λ / 4 wave plate 3, third film polarizer 4, fourth film polarizer 10, third concave mirror 9, first convex mirror 15, first laser crystal 14, second convex mirror 13. The fourth concave mirror 12, the first laser crystal 14 is a Yb:YAG rod. Wherein, the first pump light source is composed of a first semiconductor laser 18 , a firs...

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Abstract

The invention relates to the technical field of all-solid-state solid laser, in particular to an all-solid-state picosecond laser amplifier. The all-solid-state picosecond layer amplifier comprises a seed source, a seed light guide-in and amplified light guide-out device, a first pumping light source and a regenerating cavity, wherein the seed light guide-in and amplified light guide-out device comprises a first thin-film polarizer, a second thin-film polarizer, a Faraday activizer and a lambda / 2 wave plate, two cavity mirrors of the regenerating cavity comprise a first concave mirror and a second concave mirror, a Pockels cell, a first lambda / 4 wave plate, a third thin-film polarizer, a fourth thin-film polarizer, a third concave mirror, a first convex mirror, a first laser crystal, a second convex mirror and a fourth convex mirror are sequentially arranged in the regenerating cavity along light transmission direction, and the first laser crystal is a Yb:YAG (ytterbium-yttrium aluminum garnet) rod. The first laser crystal doped with Yb ions substitutes for laser crystal doped with Nd ions in the amplifier. The all-solid-state picosecond laser amplifier has the advantages of high quantum efficiency, long upper-energy-level life, low heat output rate, proneness to realizing high-power high-beam-quality laser output.

Description

technical field [0001] The invention relates to the technical field of all-solid-state solid-state lasers, in particular to an all-solid-state picosecond laser amplifier. Background technique [0002] All-solid-state high-repetition-frequency picosecond lasers have broad application prospects in industrial precision processing, satellite laser ranging, precision measurement, frequency conversion, and material interaction. At present, low-power all-solid-state picosecond lasers cannot meet the application requirements. Short pulse amplification technology is needed to amplify low-power picosecond laser pulses to required power picosecond pulses to meet application requirements in various fields. [0003] In the invention patent CN101055401A published on October 17, 2007, a kind of all-solid-state kHz picosecond laser pulse regenerative amplifier is mentioned, which includes the first polarizer, λ / 2 wave plate and Faraday optical rotator. and amplifying light deriving device;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/0941H01S3/081
Inventor 陈檬陈立元李港彭志刚
Owner BEIJING UNIV OF TECH
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