Phosphate laser neodymium glass

A phosphate and neodymium glass technology, applied in the field of phosphate laser neodymium glass, can solve the problems of low stimulated emission cross-section, inability to meet low thermo-optic effect, large thermo-optic coefficient, etc.

CN104926114AActive Publication Date: 2015-09-23CDGM GLASS LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-09-23

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Abstract

The invention provides phosphate laser neodymium glass. The phosphate laser neodymium glass is higher in stimulated emission cross section, small in thermo-optical coefficient and suitable for high-power laser devices. The phosphate laser neodymium glass comprises, by mol, 50%-70% of P2O5, 1%-15% of Al203, 5%-25% of MO, 10%-20% of R2O, 0.5%-5% of R2O3 and 0.5%-5% of Nb2O5, wherein M in the MO is one or more of Ba, Mg and Zn; R in the R2O is one ore more of LI, Na and K, and R in the R2O3 is one or more of Y, La and Nd. According to the phosphate laser neodymium glass, all components are reasonably allocated, the non-linear refractive index n2 of the obtained phosphate laser neodymium glass is 1.16-1.24(10<-13>esu), the stimulated emission cross section sigma of the obtained phosphate laser neodymium glass is 4.0-4.8(10<-20>cm<2>), and the thermo-optical coefficient ds / dT(20-60 DEG C) of the obtained phosphate laser neodymium glass is 1-2 (10<-7> / K).
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Description

technical field

[0001] The invention relates to a phosphate laser neodymium glass, in particular to a laser glass with high stimulated emission cross-section, low thermo-optic coefficient and suitable for high-power laser devices. Background technique

[0002] Neodymium glass is widely used in laser systems due to its long fluorescence lifetime, large stimulated emission cross-section, large pieces, and mass production. Neodymium glass also has a good energy storage effect and has become the preferred working material for high-power laser system amplifiers. For example, the ignition device of LLNL in the United States and the Shenguang device in my country all use neodymium glass as the amplification medium. The spectral properties of neodymium glass directly affect the design of high-power laser devices, so the study of spectral properties of neodymium glass is particularly important for the design of high-power laser devices. The spectral properties of neodymium glass inc...

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0021] The technical route of the present invention is to increase the nonlinear refractive index n of neodymium glass without obvious 2 Under the premise of ds / dT and thermo-optic coefficient, a certain amount of oxide with weak cation electric field is introduced to increase the Nd 3+ The surrounding coordination is very asymmetric, which improves the emission transition probability of the neodymium glass A rad . The relationship between the stimulated emission cross section σ and the emission transition probability is as follows:

[0022] σ = λ p 4 8 π cn 2 1 ...