Growth method of neodymium-doped gadolinium gallium garnet laser crystal

A laser crystal and growth method technology, applied in crystal growth, single crystal growth, single crystal growth, etc., can solve problems such as lattice distortion, achieve the effects of reduced dislocation density, simple method, and improved spectral performance
CN1621576AInactive Publication Date: 2005-06-01SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Publication Date
2005-06-01
Estimated Expiration
Not applicable · inactive patent
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Abstract

The Nd doped gadolinium gallium garnet laser (Nd:GGG) crystal has the material including gadolinium oxide, gallium oxide, neodymium oxide and cerium oxide in certain proportion prepared in two-step composing process. The Nd doped gadolinium gallium garnet laser crystal is grown in a Czochrolski process under the 98 % N2+2% O2 condition. The present invention solves the problem of doping Nd2O3 to cause lattice deformation, and the Nd:GGG crystal has raised radiation resistance and improved spectral and laser performance.
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Description

technical field

[0001] The present invention relates to doped neodymium gadolinium gallium garnet (Nd 3+ :Gd 3 Ga 5 o 12 Laser crystal, hereinafter referred to as: Nd:GGG, especially a growth method of neodymium-doped gadolinium-gallium garnet laser crystal. Background technique

[0002] High-power solid-state lasers have a series of strict requirements for laser crystals: large absorption and emission cross-sections, small Stokes shift, long fluorescence lifetime, high thermodynamic properties, and the ability to grow into large-sized crystals with high optical quality. The main problem faced by high-power solid-state lasers is thermal damage during the pumping process. Even with diode pumping, a significant portion of the heat is absorbed by the laser medium, causing thermal lensing, mechanical stress, and other effects.

[0003] Nd:GGG is easy to grow under a flat solid-liquid interface, there are no other impurities and stress centers, the entire cross-section can b...

Claims

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