透射率
材料科学
光学
衰减系数
波长
Crystal(编程语言)
折射率
非线性光学
激光器
吸收(声学)
光电子学
物理
计算机科学
复合材料
程序设计语言
作者
Zhengnan Wu,Yuangang Lu,Jian Huang,Jianqin Peng,Chao He
出处
期刊:Applied Optics
[The Optical Society]
日期:2022-01-03
卷期号:61 (2): 392-392
被引量:9
摘要
In this paper, we investigate the third-order nonlinearities and optical limiting effect of Tm: YAG crystal at a wavelength of 1064 nm. We experimentally measure different energy densities (6.4, 12.8, and 19.2J/cm2) and obtain the nonlinear absorption coefficient, nonlinear refractive index, and third-order nonlinear susceptibility of Tm: YAG crystal. Z-scan results show that Tm: YAG crystal exhibits a large nonlinear absorption coefficient (3.34×10-9m/W) at the wavelength of 1064 nm. We also measure the transmittance of Tm: YAG crystals of three different lengths (7, 15, and 20 mm) to evaluate its nonlinear optical limiting performance. For the 20 mm Tm: YAG crystal, the maximum transmittance without optical limiting effect and minimum transmittance with nonlinear optical limiting effect at a 1064 wavelength nm are 84.2% and 47.8%, respectively, which indicates that Tm: YAG crystal may be a solid material for nonlinear optical limiting at 1064 nm.
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