基于溶胶-凝胶玻璃和旋涂法的二硫化钼薄膜可饱和吸收体在高功率调Q Nd:YAG激光器中的应用

Molybdenum Disulfide Film Saturable Absorber Based on Sol-Gel Glass and Spin-Coating Used in High-Power Q-Switched Nd:YAG Laser.

作者信息

Wang Jiang, Chen Zhendong, Wang Yonggang, Wang Taijin, Liu Sicong, Chen Guanghua, Wang Yishan, Ren Wei, Li Lu

机构信息

School of Physics and Information Technology , Shaanxi Normal University , Xi'an 710119 , China.

Electronic Information College , Northwestern Polytechnical University , Xi'an 710072 , China.

出版信息

ACS Appl Mater Interfaces. 2020 Feb 26;12(8):9404-9408. doi: 10.1021/acsami.9b14494. Epub 2020 Feb 12.

DOI:10.1021/acsami.9b14494

PMID:31983200

Abstract

In recent years, many different kinds of nonlinear optical materials have been applied to passively Q-switched solid-state lasers. However, the average output powers of these lasers are typically limited to 1 W due to the low damage threshold of the materials. In this study, a molybdenum-disulfide-doped glass-composite absorber was synthesized using the sol-gel method and spin-coating technique. The optical damage threshold of the absorber reached 3.17 J/cm. Saturation intensity, modulation depth, and nonsaturable loss are 9.35 MW/cm, 8.41%, and 9.14%, respectively. After inserting the absorber into a linear Nd:YAG laser cavity, the maximum average output power (3.22 W) and stable Q-switched laser pulses duration (132 ns) were obtained.

摘要

近年来，许多不同种类的非线性光学材料已被应用于被动调Q固态激光器。然而，由于这些材料的损伤阈值较低，这些激光器的平均输出功率通常限制在1瓦。在本研究中，采用溶胶-凝胶法和旋涂技术合成了一种二硫化钼掺杂的玻璃复合吸收体。该吸收体的光学损伤阈值达到3.17 J/cm²。饱和强度、调制深度和非饱和损耗分别为9.35 MW/cm²、8.41%和9.14%。将该吸收体插入线性Nd:YAG激光腔后，获得了最大平均输出功率（3.22瓦）和稳定的调Q激光脉冲持续时间（132纳秒）。