基于声光锁模全固态660 nm激光器

王禹凝; 郑权; 苏鑫; 柏中树; 张秀齐; 刘超智; 刘薇

doi:10.37188/CO.EN-2023-0013

基于声光锁模全固态660 nm激光器

王禹凝^2,,
郑权^{1, 2},
苏鑫^2, ,,
柏中树²,
张秀齐²,
刘超智²,
刘薇²

1.
中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
2.
长春新产业光电技术有限公司, 吉林长春 130103

详细信息

中图分类号: O432.1+2
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出版历程
- 收稿日期: 2023-06-06
- 修回日期: 2023-07-10
- 网络出版日期: 2023-08-08

All-solid-state acousto-optic mode-locked laser operating at 660 nm

doi: 10.37188/CO.EN-2023-0013

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
Changchun New Industries Optoelectronics Technology Co., Ltd., Changchun 130103, China

Funds: Supported by Science and Technology Development Plan of Jilin Province, China (No. 20210201004GX)

More Information

Author Bio:
WANG Yu-ning (1986 —), male, senior engineer, born in Changchun, Jilin Province. He recieved his B.S. and M.S. from Changchun University of Science and Technology, in 2009 and 2012, respectively, and is now working as an R & D manager in Changchun New Industries Optoelectronics Technology Co., Ltd. His main research areas are laser physics and new type lasers. E-mail: wangyn@cnilaser.com

SU Xin (1991 —), male, engineer, born in Changchun, Jilin Province. He received his bachelor's degree from Changchun University of Science and Technology in 2014. He is mainly engaged in the research of all-solid-state laser and nonlinear optical frequency conversion technology. E-mail: suxin@cnilaser.com

Corresponding author: suxin@cnilaser.com

摘要

摘要:
脉冲宽度为皮秒的红光激光器，具有脉冲宽度窄，峰值功率高的优点，使其在工业、医疗、科研和信息存储等方面具有广泛的应用。本文采用声光锁模(AOML)的方式设计了一款具有窄线宽、高转换效率，输出波长为660 nm的全固态皮秒激光器。该激光器采用半导体侧面泵浦的方式，通过优化谐振腔型，并使用两块LiB₃O₅ ( LBO )晶体进行腔外倍频，最终获得最大输出功率为8.6 W的660 nm激光输出。激光器采用脉冲侧面泵浦的模式，获得的锁模脉冲频率为100 MHz，脉冲宽度为887 ps。1319 nm至660 nm激光的倍频转换效率可达41%。
- 声光锁模 /
- 非临界相位匹配 /
- 宏微脉冲
Abstract:
Red lasers with a picosecond pulse width are widely used in various fields such as industrial, medical, scientific research and information strorage due to their narrow pulse width and high peak power. This paper presents an all-solid-state laser, operating at 660 nm with picosecond pulse width, narrow band, and high conversion efficiency, which is demonstrated by the acousto-optic mode-locked (AOML) method. By optimizing the cavity and implementing external frequency doubling with two LiB₃O₅ (LBO) crystals along with various techniques, a mode-locked red laser source with a maximum output power of 8.6 W is developed. The laser operates in a pulsed side-pumped regime and contains the mode-locked pulses with a frequency of 100 MHz and a pulse width of 887 ps. The optical-to-optical conversion efficiency from 1319 nm to 660 nm can reach up to 41%.
- Acousto-Optic Mode-Locked (AOML) /
- Non-Critical Phase-Matched (NCPM) /
- macro-micro pulse

HTML全文

Figure 1. Schematic diagram for mode-locked pulsed Nd:YAG/LBO red laser.M1–M6: 45° high-reflection (HR) coating at 1319 nm; M7-M10: concave mirrors; M11: 45° HR at 1319 nm and anti-reflection (AR) coating at 660 nm; L1, L2: lens; LM1–LM4: laser modules

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Figure 2. Energy level diagram of an Nd:YAG crystal

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Figure 3. The laser pulse waveform (when oscilloscope's bandwidth is adjusted to 20 MHz)

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Figure 4. Schematic for macro-micro pulse waveforms

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Figure 5. Micro pulse profiles of the mode-locked 660 nm laser waveforms

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Figure 6. Beam profile distribution of the 659.592 nm laser

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Figure 7. Spectrum profile and linewidth of red laser (660nm) output pulse

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Figure 8. The long-term stability of laser frequency and linewidth of red laser

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Figure 9. 660 nm output power versus the input power for frequency doubling in LBO crystals

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Figure 10. Power stability of the output laser over 2 hours

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