Anisotropic stimulated emission cross-section measurement in Nd:YVO4

被引：6
作者：
Guo, Rui [1 ]
Shen, Yijie [1 ]
Meng, Yuan [1 ]
Gong, Mali [1 ,2 ]
机构：
[1] Tsinghua Univ, Dept Precis Instrument, State Key Lab Precis Measurement & Instruments, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Dept Precis Instrument, State Key Lab Tribol, Beijing 100084, Peoples R China
来源：
CHINESE PHYSICS B | 2019年 / 28卷 / 04期
关键词：
solid-state lasers; stimulated emission cross-section; Nd:YVO4; laser spectroscopy; LASER; CRYSTALS;
D O I：
10.1088/1674-1056/28/4/044204
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
As a crucial parameter in the design and analysis of laser performances, stimulated emission (SE) cross-section is currently considered to be dependent on several factors, such as temperatures and eigen-polarizations for anisotropic crystals. In contrast with these factors, impact of propagating directions upon SE cross-section has garnered less attention. In this paper, to investigate the SE cross-section in arbitrary propagating directions, fluorescence spectra for the transition F-4(3/2 )-> (4)I(11/2 )in Nd:YVO4 are measured in different propagating directions. Based on Fuchtbauer-Ladenburg equation model, the propagating direction-dependent SE cross-section spectra in Nd:YVO(4 )are obtained for the first time, to our best knowledge. A novel concept of anisotropic SE cross-section is proposed to interpret the propagating direction-dependent effect. The experiment results reveal that for an arbitrary propagating direction the SE cross-section of e light around 1064 nm can be expressed as a superposition from two principle axial propagating directions with a weight of plane projection.
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页数：5
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