Spectroscopic properties analysis and laser characteristic simulation of Er:GSGG crystal

Abstract

Abstract:

Absorption spectra, fluorescence spectra of Er:GSGG crystal were measured and investigated. The oscillator strength, spontaneous emission probability, energy level lifetime, emission branching ratio of Er3+ transitions were calculated according to the Judd-Ofelt theory, and also calculate stimulated absorption cross-section. It is found that the crystal has long lifetime at 4I13/2 and 4I11/2, large absorption cross-section at 965nm and 790nm, large stimulated emission cross-section at 2.79µm. Numerical simulation laser output characteristic with 965mn pumped, it has a large quantum efficiency when the pump rate at definite value. The result show that this crystal may be a suitable laser material at 2.79µm wave band.

Key words: spectroscopy, spectroscopy parameter, Judd-Ofelt theory, laser crystal

CLC Number:

O433.4

Huang Li,Guo Qiang,Luo Jianqiao,Wang Shouzhang, Zhou Jian, Wu Zhaohui. Spectroscopic properties analysis and laser characteristic simulation of Er:GSGG crystal[J]. J4, 2012, 29(1): 45-51.

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