Study on the Saturable Absorption Characteristics of Co2+ : MgAl2O4 with Different Orientations

被引：1
|
作者：
Fang Zijun [1 ]
Hui Yongling [1 ,2 ,3 ,4 ]
Li Guotai [1 ]
Zhu Zhanda [1 ,2 ,3 ,4 ]
Lei Hong [1 ,2 ,3 ,4 ]
Li Qiang [1 ,2 ,3 ,4 ]
机构：
[1] Beijing Univ Technol, Fac Mat & Mfg, Inst Laser Engn, Beijing 100124, Peoples R China
[2] Beijing Engn Res Ctr Laser Appl Technol, Beijing 100124, Peoples R China
[3] Engn Res Ctr Adv Laser Mfg, Beijing Higher Inst, Beijing 100124, Peoples R China
[4] Minist Educ, Key Lab Transscale Laser Mfg Technol, Beijing 100124, Peoples R China
来源：
ACTA OPTICA SINICA | 2020年 / 40卷 / 22期
关键词：
laser optics; Co2+ : MgAl2O4; saturable absorption characteristics; anisotropic; passive Q-switching; NONLINEAR ABSORPTION;
D O I：
10.3788/AOS202040.2214001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The saturable absorption characteristics of Co2+ : MgAl2O4 crystals in different cutting directions were experimentally studied. The anisotropic transmittance characteristics of [100] and [110] -cut Co2+ : MgAl2O4 crystals were measured, and the measurement results showed that the crystal transmittance of [100] and [110] cutting directions changed periodically depend on the polarization direction of the incidence light. And, the output characteristics of two cutting directions of Co2+ : MgAl2O0 passively Q-switched lasers in [100] and [110] are compared. Results show that the [110] -cut crystal has obvious advantages. The output energy is about 8% higher than that of the [100] -cut crystals, and the stability, beam quality, and extinction ratio are improved slightly.
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页数：6
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