注入功率比可调控的双泵浦复合腔501 nm青光激光器

王兰; 金光勇; 董渊; 王超

doi:10.37188/CO.2020-0161

注入功率比可调控的双泵浦复合腔501 nm青光激光器

doi: 10.37188/CO.2020-0161

王兰^{1, 2,},
金光勇^1, ,,
董渊¹,
王超¹

1.
长春理工大学吉林省固体激光技术与应用重点实验室，吉林长春 130022
2.
吉林省计量科学研究院吉林省计量测试仪器与技术重点实验室，吉林长春 130103

详细信息

作者简介:
王　兰(1984—)，女，吉林长春人，博士研究生，工程师，2011年于长春理工大学获得硕士学位，现就读于长春理工大学，主要从事激光物理与新型固体激光器的研究，任职于吉林省计量科学研究院，吉林省计量测试仪器与技术重点实验室，主要从事计量校准、检定方面的工作。E-mail：86830639@qq.com

金光勇（1971—），男，吉林长春人，研究员，博士生导师，2003年于长春理工大学获得工学博士学位，主要从事激光及其物质相互作用、激光物理与新型固体激光器方面的研究。E-mail：jgycust@163.com

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出版历程
- 收稿日期: 2020-09-04
- 修回日期: 2020-10-09
- 网络出版日期: 2021-03-09
- 刊出日期: 2021-03-23

Double pumped composite cavity 501 nm cyan laser with tunable injection power ratio

WANG Lan^{1, 2
,},
JIN Guang Yong^{1
, ,},
DONG Yuan¹,
WANG Chao¹

1.
Jilin Key Laboratory of Solid-state Laser Technology and Application, Changchun University of Science and Technology, Changchun 130022, China
2.
Jilin Province Key Laboratory of Measurement and Testing Instruments and Technology, Jilin Institute of Metrology, Changchun 130103, China

More Information

Corresponding author: jgycust@163.com

摘要

摘要: 为了探究提高500 nm附近激光高准确度应用的理论和技术依据，本文采用双泵浦源复合腔结合非线性和频变换，实现腔内两种波长基频光无增益竞争，可提高基频光输出功率，同时在复合腔内进行多次非线性频率变换，通过调控基频光注入功率比，使腔内光子数配比达到1∶1，从而有效提高了光-光转换效率及和频输出功率。对首次建立的理论模型进行了实验验证，分别采用Nd:YAG和Nd:YVO₄作为增益介质获取946 nm和1064 nm基频光输出，LBO为和频晶体；通过双泵浦源结构实现946 nm和1064 nm基频光无增益竞争，调节注入LBO光功率，对比注入功率比不同时的和频转换效率及输出功率，最终在基频光注入功率比为1.48∶1（即腔内光子数配比为1∶1）时获得最大输出功率923 mW的501 nm青光。
- 双泵浦复合腔 /
- 功率比 /
- 青光激光器
Abstract: In order to explore the theoretical and technical basis for the application of high accuracy laser near 500 nm, a double pump source composite cavity combined with nonlinear sum frequency conversion is used to realize zero gain competition of two kinds of fundamental frequency laser in the cavity. This method can improve the output power of fundamental frequency laser, as well as carry out multiple nonlinear frequency conversion in the composite cavity. By adjusting the fundamental frequency laser injection power ratio, the photon number ratio in the cavity reaches 1∶1, which effectively improves the optical-to-optical conversion efficiency and sum-frequency output power. The theoretical model established for the first time is verified experimentally, and Nd:YAG and Nd:YVO₄ are used as gain media to obtain 946 nm and 1064 nm fundamental frequency laser output respectively. LBO is sum-frequency crystal. The 946 nm and 1064 nm fundamental frequency laser without gain competition is realized by using the double pump source structure. By adjusting the injection LBO optical power, the sum frequency conversion efficiency and output power are researched when the injection power ratio is different. Finally, the maximum output power of 501 nm cyan laser is 923 mW when the injection power ratio is 1.48∶1 (i.e. the photon number ratio in the cavity is 1∶1).
- dual-pump complex cavity /
- power ratio /
- cyan laser

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图 1 实验装置示意图

Figure 1. Schematic diagram of experimental device

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图 2 946 nm和1064 nm基频光同时输出光谱图

Figure 2. Spectrum of 946 nm and 1064 nm fundamental frequency laser output at the same time

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图 3 946 nm和1064 nm输出功率与泵浦电流的关系

Figure 3. Relationships between pump current and output power at 946 nm and 1064 nm

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图 4 946 nm和1064 nm腔内功率与泵浦电流关系

Figure 4. Relationships between the pump current and the intracavity power at 946 nm and 1064 nm

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图 5 946 nm和1064 nm泵浦功率与501 nm输出功率关系

Figure 5. Relationship between pump power at 946 nm and 1064 nm and output power at 501 nm

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图 6 501 nm输出功率与946 nm和1064 nm注入功率比的关系

Figure 6. Relationship between output power at 501 nm and injection power ratio of 946 nm and 1064 nm

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图 7 501 nm光谱图和光斑图。（a）光谱图；（b） 2D光斑；（c） 3D光斑

Figure 7. Spectrum and spot at 501 nm. (a) Spectrogram; (b) 2D spot; (c) 3D spot

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