Yttrium lithium fluoride composite crystal and preparation method thereof

A technology of yttrium-lithium fluoride and composite crystals, which is applied in the field of yttrium-lithium fluoride composite crystals and its preparation, can solve the problems of inability to ensure strict matching of crystal orientations, unfavorable laser output efficiency, loss of yttrium-lithium fluoride composite crystals, etc., to achieve It is convenient for large-scale industrial application, reduces the birefringence effect, and overcomes the effect of thermal expansion and detachment
CN104099665AActive Publication Date: 2014-10-15北京雷生强式科技有限责任公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京雷生强式科技有限责任公司
Publication Date
2014-10-15

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Abstract

The invention discloses an yttrium lithium fluoride composite crystal and a preparation method thereof, and belongs to the technical field of laser crystal preparation. According to the method, an yttrium lithium fluoride crystal on a c-axis crystal orientation is pre-boned at the end part of a doped yttrium lithium fluoride crystal on an a-axis crystal orientation with a direct bonding technology, and a first intermediate product is obtained; the intermediate product is subjected to pressure treatment in the direction perpendicular to the bonding surface of the first intermediate product, and a second intermediate product is obtained; and finally, under the vacuum condition, the second intermediate product is subjected to hot isostatic pressure treatment, and the yttrium lithium fluoride composite crystal is obtained. The prepared yttrium lithium fluoride composite crystal doesn't have the axial matching problem and has a low heat effect, thermally induced depolarization loss of the crystal is reduced, and the output power and the beam quality of a laser are improved.
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Description

technical field

[0001] The invention relates to the technical field of laser crystal preparation, in particular to a compound crystal of yttrium lithium fluoride and a preparation method thereof. Background technique

[0002] Lithium yttrium fluoride (LiYF 4 , referred to as YLF) is an excellent laser host crystal material with good spectrum and laser performance, and can realize laser output of various wavelengths from mid-infrared to visible light and ultraviolet light at room temperature. More specifically, lithium yttrium fluoride has anti-ultraviolet radiation and is suitable for multi-doping properties. The doped lithium yttrium fluoride prepared by doping different active ions can emit laser light of different wavelengths at room temperature, due to nonlinear refraction The efficiency is small, and it can be used as a working material for high-power high-energy laser device oscillators and preamplifiers. However, at high power levels, the thermal effect of the cryst...

Claims

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