全固态深紫外激光器研究进展

金秦隆<sup>1</sup>; 徐灿<sup>1</sup>; 沈惟含<sup>1</sup>; 赵志斌<sup>1; 2</sup>; 徐东昕<sup>2</sup>; 刘国军<sup>1; 2</sup>; 乔忠良<sup>1; 2</sup>; 曲轶<sup>1; 2</sup>

文章摘要

金秦隆, 徐灿, 沈惟含, 赵志斌, 徐东昕, 刘国军, 乔忠良, 曲轶.全固态深紫外激光器研究进展[J].海南师范大学学报自科版,2024,37(3):269-277

全固态深紫外激光器研究进展

Research Progress of All-solid-state Deep Ultraviolet Lasers

DOI：10.12051/j.issn.1674-4942.2024.03.001

中文关键词: 激光器深紫外激光增益介质非线性光学晶体 228 nm激光

英文关键词: laser deep ultraviolet laser gain medium nonlinear optical crystals 228 nm laser

基金项目:国家自然科学基金项目（62274048）；海南省自然科学基金项目（121QN228）；海南师范大学大学生创新创业开放基金（榕树基金）项目（RSXH20231165817X）

作者	单位
金秦隆¹, 徐灿¹, 沈惟含¹, 赵志斌^1,2, 徐东昕², 刘国军^1,2, 乔忠良^1,2, 曲轶^1,2	1.海南师范大学物理与电子工程学院，海南海口 571158 2.海南省激光技术与光电功能材料重点实验室，海南海口 571158

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中文摘要:

深紫外激光器（DUV）在工业、军事、医疗和科研等领域有广泛的应用。介绍了全固态深紫外激光器的增益介质以及用于产生深紫外激光的非线性光学晶体，回顾了以固体或光纤激光器为基频光通过非线性频率转换技术产生DUV激光器的研究进展，阐述了掺Nd³⁺增益介质准三能级激光系统与四能级系统存在差异的原因。介绍了作者团队由掺Nd³⁺准三能级激光系统所产生的0.9 μm基频光获得228 nm激光的研究进展。

英文摘要:

Deep ultraviolet (DUV) lasers have extensive applications in industries, military, medical, and scientific research fields. This paper introduced the gain medium and nonlinear optical crystals used in all-solid-state deep ultraviolet lasers for generating DUV light. The research progress in the development of DUV lasers through nonlinear frequency conversion technology, utilizing solid/fiber lasers as the base frequency light was reviewed. The paper explained the reasons for the differences between the Nd³⁺ gain medium quasi-three-level laser system and the four-level laser system. Our team's research findings on achieving a 228 nm laser through frequency quadrupling of the 0.9 μm fundamental light generated by the Nd³⁺-doped quasi-three-level laser system were also reported.

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