Neodymium glass regenerative amplifier

Abstract

The invention provides a neodymium glass regenerative amplifier, which comprises a regeneration cavity edge polarizing device, a quarter-wave plate, an electro-optical crystal and a first reflecting mirror which are sequentially arranged on a main optical path, and a regeneration cavity internal polarizing device, a neodymium glass rod and a second reflecting mirror which are sequentially arranged on an auxiliary optical path, wherein the regeneration cavity edge polarizing device is used for transmitting first-class polarized light and reflecting second-class polarized light; the quarter-wave plate is used for converting the first-class polarized light or the second-class polarized light into circularly polarized light; voltage applied to the electro-optical crystal is controlled, the electro-optical crystal is equivalent to a flat plate when no voltage is applied to the electro-optical crystal, and the electro-optical crystal is equivalent to a quarter-wave plate which quarter-wave voltage is applied to the electro-optical crystal; the regeneration cavity internal polarizing device is used for transmitting the first-class polarized light and transmitting the second-class polarized light, and the regeneration cavity internal polarizing device and the regeneration cavity edge polarizing device mutually receive the polarized light reflected by the opposite parties; and the neodymium glass rod is used for providing gain.

Description

technical field [0001] The invention relates to the field of laser amplifiers, in particular to a high-energy and high-efficiency neodymium glass regenerative amplifier. Background technique [0002] Neodymium-doped phosphate glass (referred to as Nd glass) is widely used in the Ultrashort pulse amplification, strong field physics and laser nuclear fusion and other fields. [0003] Neodymium glass regenerative amplifier combines the advantages of neodymium glass and regenerative amplifier, very suitable for use as a high gain preamplifier. [0004] However, due to the poor thermal conductivity and severe thermal effects of neodymium glass, higher energy neodymium glass regenerative amplifiers are limited by small-scale self-focusing effects and the destruction threshold of electro-optic crystals, which has become a technical problem. Contents of the invention [0005] The technical problem to be solved by the present invention is to provide a neodymium glass regenerative...

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Problems solved by technology

[0004] However, due to the poor thermal conductivity of neodymium glass and the severe thermal effect, higher energy neodymium glass regenerative amplifiers are limited by the small-scale self-focusing effect and the destruction threshold of electro-optic crystals, which has become a technical problem.

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