Author Affiliations
Abstract
1 Ultrafast Laser Laboratory, Key Laboratory of Opto-electronic Information Science and Technology of Ministry of Education, School of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China
2 E-mail: huminglie@tju.edu.cn
On the basis of a home-made femtosecond Yb-doped fiber laser, we designed a compact and efficient third harmonic generation scheme by a simple compensation plate of β-BaB2O4 crystal. The compensation plate is optimized through its thickness and cutting angle to reverse both spatial and temporal walk-off. By optimizing the parameters of the compensation plate and incident light intensity, a maximum output of 2.23 W with a repetition rate of 1 MHz at 345 nm is obtained, which implies a conversion efficiency of 23% from the infrared to ultraviolet.
ultrafast nonlinear optics harmonic generation and mixing ultraviolet compensation plates Chinese Optics Letters
2021, 19(3): 031402
天津大学精密仪器与光电子工程学院超快激光研究室, 光电信息技术教育部重点实验室, 天津 300072
最近十几年来,随着飞秒激光技术及非线性晶体制备技术的逐渐成熟,非线性光学频率变换技术得到了飞速发展。非线性光学频率变换技术的研究旨在突破激光增益介质发射谱线的限制,使激光器输出波长拓展至传统激光器所无法直接输出的波段范围,以满足更加广泛的科研及应用需求。到目前为止,非线性频率变换技术是获得多波长和可调谐飞秒激光的最简捷有效的途径。近些年来,本研究室在研究光纤飞秒激光器的基础上,开展了基于掺Yb
3+光子晶体光纤飞秒激光系统抽运不同介质的非线性频率变换研究,主要包括:基于块状晶体的光学参量振荡(OPO)技术、基于砷化镓(GaAs)纳米线的频率上转换、基于高非线性光子晶体光纤的超连续谱及三次谐波的产生。简要介绍国内外相关研究成果,重点综述了本研究室近五年来在上述研究领域的科研成果,分别介绍了OPO技术、砷化镓(GaAs)纳米线的频率上转换和基于高非线性光子晶体光纤的超连续谱及三次谐波的产生技术的基本原理、研究进展以及前沿应用。
非线性光学 非线性光学频率变换 光子晶体光纤飞秒激光 光学参量振荡器 砷化镓纳米线 高非线性光子晶体光纤 激光与光电子学进展
2018, 55(4): 040001
