Yb∶CaGdAlO4晶体及其超快激光技术研究进展

摘要/Abstract

摘要： Yb∶CaGdAlO₄(简写为Yb∶CALGO)晶体具有部分无序的结构、优秀的热学和光谱性质、吸收发射带宽,适合采用商用高功率InGaAs二极管泵浦以实现高功率超快激光运转,其较高的非线性折射率系数有利于对锁模激光器的优化。该晶体还具有能级结构简单、本征量子缺陷低、辐射量子效率高等优点,是近年来新一代紧凑型、高效率、低成本激光二极管(LD)泵浦飞秒激光增益介质。本文简要介绍Yb∶CALGO的晶体结构、晶体生长、缺陷分析、热学性质和光谱性质等,并综合国内外学者近期的一些研究成果,重点综述了Yb∶CALGO晶体在半导体可饱和吸收镜、克尔透镜锁模的超快激光器及再生放大器超快激光技术中的最新研究进展。

关键词: Yb∶CaGdAlO₄晶体, 晶体生长, 热学性质, 光谱性质, 超快激光

Abstract: Yb∶CaGdAlO₄ (abbreviated as Yb∶CALGO) crystal has partially disordered structure, excellent thermal and spectral properties, broad absorption and emission band, and is suitable to be pumped by the high-power InGaAs laser diode (LD) to achieve high power ultra fast laser. The high nonlinear refractive index coefficient of Yb∶CALGO is beneficial to the optimization of its mode-locked laser. The Yb∶CALGO crystal also has the advantages of simple energy levels, low intrinsic quantum defect and high radiation quantum efficiency etc, and thus becomes the new generation of LD pumped femtosecond laser gain medium in recent years, with the advantages of compact structure, high efficiency and low cost etc. This paper provides a brief view of the crystal structure, crystal growth, defect analysis, thermal properties and spectral properties of Yb∶CALGO crystal, and mainly focuses on the recent progress of ultra fast laser technologies based on the research results of Yb∶CALGO crystals, including the mode-locked technologies by the semiconductor saturation absorber mirror and Kerr lens mode-locked ultrafast laser, as well as the regenerative amplifier ultra fast laser technologies.

Key words: Yb∶CaGdAlO₄ crystal, crystal growth, thermal property, spectral property, ultra fast laser

中图分类号:

O78
O736

刘小虎, 李坚富, 朱昭捷, 涂朝阳, 王阁阳, 杨金芳, 朱江峰, 王燕. Yb∶CaGdAlO₄晶体及其超快激光技术研究进展[J]. 人工晶体学报, 2023, 52(7): 1195-1207.

LIU Xiaohu, LI Jianfu, ZHU Zhaojie, TU Chaoyang, WANG Geyang, YANG Jinfang, ZHU Jiangfeng, WANG Yan. Research Progress of Yb∶CaGdAlO₄ Crystal and Its Ultra Fast Laser Technology[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(7): 1195-1207.

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Yb∶CaGdAlO₄晶体及其超快激光技术研究进展

Research Progress of Yb∶CaGdAlO₄ Crystal and Its Ultra Fast Laser Technology

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