同带泵浦的Tm:CYA调Q锁模激光器

孙堂正; 李云飞; 谭晶荣; 杜晓娟; 丁嘉宇; 任舒婷; 许浩; 王翀; 杨金芳; 张明霞; 朱永乐; 董忠; 令维军

doi:10.37188/CO.2023-0162

同带泵浦的Tm:CYA调Q锁模激光器

doi: 10.37188/CO.2023-0162

cstr: 32171.14.CO.2023-0162

孙堂正^{1, 2,},
李云飞^{1, 2},
谭晶荣^{1, 2},
杜晓娟^{1, 2},
丁嘉宇^{1, 2},
任舒婷^{1, 2},
许浩^{1, 2},
王翀^{1, 2},
杨金芳^{1, 2},
张明霞^{1, 2},
朱永乐^{1, 2},
董忠^{1, 2},
令维军^{1, 2, ,}

1.
甘肃省全固态激光工程研究中心, 甘肃天水 741001
2.
集成电路封装与测试教育部工程研究中心, 甘肃天水 741001

基金项目: 国家自然科学基金（No. 62165012）；甘肃省重点研发计划（No. 21YFIGE300）；甘肃省高等学校产业支撑引导项目（No. 2020C-23）；甘肃省教育厅：教育揭榜挂帅项目（No. 2021jyjbgs-06）；甘肃省高等学校创新基金项目（No. 2021B-190）；秦州区科技计划（No. 2021-SHFZG-1442)；2023年甘肃省高校青年博士支持项目（No. 2023QB-013）；天水师范学院2022 年科研创新平台建设专项（No. PTJ2022-06)；天水师范学院研究生创新引导项目（No. TYCX2235）；甘肃省优秀研究生创新之星项目（No. 2022CXZX-796，No. 2023CXZX-792）

详细信息

作者简介:
孙堂正（1999—），男，江苏淮安人，硕士研究生，2021年于江苏第二师范学院取得学士学位，主要从事超快激光技术方面的研究。E-mail：210700788@qq.com

令维军（1968—），男，甘肃天水人，博士，教授，硕士生导师， 2005年于中国科学院物理研究所获得博士学位，主要从事光超短激光脉冲产生及放大方面的研究。E-mail：wjlingts@sina.com

中图分类号: TN248.1
计量
- 文章访问数: 280
- HTML全文浏览量: 118
- PDF下载量: 87
- 被引次数: 0
出版历程
- 收稿日期: 2023-09-15
- 修回日期: 2023-10-09
- 网络出版日期: 2024-02-01

Tm:CYA Q-switched mode-locked laser realized by tandem-pumping

SUN Tang-zheng^{1, 2
,},
LI Yun-fei^{1, 2},
TAN Jing-rong^{1, 2},
DU Xiao-juan^{1, 2},
DING Jia-yu^{1, 2},
REN Shu-ting^{1, 2},
XU Hao^{1, 2},
WANG Chong^{1, 2},
YANG Jin-fang^{1, 2},
ZHANG Ming-xia^{1, 2},
ZHU Yong-le^{1, 2},
DONG Zhong^{1, 2},
LING Wei-jun^{1, 2
, ,}

1.
Gansu All-Solid State Laser Engineering Research Center, Tianshui 741001, China
2.
Integrated Circuit Engineering Research Center of the Ministry of Education, Tianshui 741001, China

Funds: Supported by National Natural Science Foundation of China (No. 62165012); Key R&D Program of Gansu Province (No. 21YFIGE300); Gansu Provincial Higher Education Industry Support and Guidance Project (No. 2020C-23); Gansu Provincial Department of Education: Education Unveiling and Leading Project (No. 2021jyjbgs-06); Gansu Provincial Higher Education Innovation Fund Project (No. 2021B-190); Qinzhou District Science and Technology Plan (No. 2021-SHFZG-1442); 2023 Gansu Provincial University Young Doctoral Support Project (No. 2023QB-013); Tianshui Normal University 2022 special project for the construction of scientific research and innovation platform (No. PTJ2022-06); Tianshui Normal University Graduate Innovation Guidance Project (No. TYCX2235); Gansu Province Outstanding Graduate Innovation Star Program (No. 2022CXZX-796, No. 2023CXZX-792)

More Information

Corresponding author: wjlingts@sina.com

摘要

摘要:
以半导体可饱和吸收镜SESAM作为锁模启动元件，利用同带泵浦技术首次在Tm:CaYALO₄(Tm:CYA)激光器实现了被动调Q锁模运转。光路采用X型四镜腔结构，泵浦源采用Er:Y₃Al₅O₁₂(Er:YAG)固体激光器，其中心波长为1650 nm。分别采用0.5%、1.5%、3%和5%透过率的输出耦合镜，对激光器连续光输出和锁模输出特性进行研究。结果表明：当采用5%透过率的输出耦合镜时，激光器的输出特性最好；当激光器在连续光运转情况下，得到了894 mW的最高功率和16%的最大斜效率输出；将连续光功率优化至最高，在光路中加入SESAM锁模元件后，当吸收泵浦功率大于1.86 W时，激光运转进入不稳定的调Q状态；当吸收泵浦功率提高到5.7 W时，实现了稳定的被动调Q锁模运转；吸收泵浦功率达到6.99 W时，采用5%透过率的输出耦合镜，获得了最高输出功率为399 mW的锁模脉冲激光；此时调Q包络下重复频率为98.11 MHz，脉冲宽度为619.4 ps，对应的最大单脉冲能量为4.07 nJ，调Q包络中锁模脉冲调制深度接近100%。实验结果证明，同带泵浦技术可以用于激光器以产生调Q锁模脉冲，为超短脉冲激光的产生提供了一种新的泵浦方式。
- Tm:CYA激光器 /
- 同带泵浦 /
- 半导体可饱和吸收镜(SESAM) /
- 调Q锁模
Abstract:
Passively Q-switched mode-locked operation was realized for the first time by inserting a semiconductor saturable absorption mirror (SESAM) as a mode-locking element into a Tm:CaYALO₄(Tm:CYA) laser using tandem-pumping technology. The laser cavity adopted an X-type four-mirror cavity structure, and the pumping source was an Er:Y₃Al₅O₁₂(Er:YAG) solid-state laser with a central wavelength of 1650 nm. Output coupling mirrors with transmittances of 0.5%, 1.5%, 3%, and 5% were used to study the laser’s continuous wave (CW) output and mode-locking output characteristics. The experimental results show that the laser has the best output characteristics when an output coupling mirror with a transmittance of 5% is used. The maximum power of 894 mW and the maximum slope efficiency of 16% were obtained when the laser operated in the CW regime. After the CW power was optimized to the highest, the mode-locked element SESAM was added to the optical path. When the absorbed pump power became greater than 1.86 W, the laser operation entered an unstable Q-switched state; when the absorbed pump power increased to 5.7 W, a stable passively Q-switched mode-locked operation was achieved; when the absorbed pump power reached 6.99 W, a mode-locked pulse laser with a maximum output power of 399 mW was obtained by using the output coupling mirror with transmittance of 5%. At that time, the repetition frequency under the Q-switched envelope was 98.11 MHz, the pulse width was 619.4 ps, and the corresponding maximum single pulse energy was 4.07 nJ. The mode-locked pulse modulation depth in a Q-switched envelope was observed to be close to 100%. The above results show that tandem-pumping technology can be used in lasers to generate Q-switched mode-locked pulses, which provides a new pumping method for generating ultrashort pulse lasers.
- Tm:CYA laser /
- tandem-pumping /
- semiconductor saturable absorption mirror (SESAM) /
- Q-switched mode-locked

HTML全文

图 1 实验装置原理图

Figure 1. Schematic diagram of the experimental device

下载: 全尺寸图片幻灯片

图 2 连续光输出功率随吸收泵浦功率变化图

Figure 2. The output power of continuous laser varies with the absorption pump power

下载: 全尺寸图片幻灯片

图 3 锁模输出功率随泵浦功率变化图

Figure 3. The average output power of the mode-locking laser versus the absorbed pump power

下载: 全尺寸图片幻灯片

图 4 调Q脉冲重复频率和脉冲宽度与吸收的泵浦功率的变化关系

Figure 4. The Q-switched pulse repetition rate and pulse width versus the absorbed pump power

下载: 全尺寸图片幻灯片

图 5 连续光和锁模激光光谱图

Figure 5. The CW and mode-locked laser spectrogram

下载: 全尺寸图片幻灯片

图 6 纳秒和微秒时间刻度下的脉冲锁模序列

Figure 6. The Q-switched mode-locked pulse trains in nanosecond and microsecond time scales, respectively

下载: 全尺寸图片幻灯片

图 7 锁模脉冲重复频率和脉冲宽度

Figure 7. Repetition frequency and pulse width of the mode-locked pulse

下载: 全尺寸图片幻灯片

参考文献(21)

[1]	BELYAEV A N, CHABUSHKIN A N, KHRUSHCHALINA S A, et al. Investigation of endovenous laser ablation of varicose veins in vitro using 1.885-μm laser radiation[J]. Lasers in Medical Science, 2016, 31(3): 503-510. doi: 10.1007/s10103-016-1877-z
[2]	田俊涛, 李辉, 赵莉莉, 等. 温度调谐ZnGeP₂长波红外光参量振荡器[J]. 中国光学(中英文),2023,16(4):861-867. doi: 10.37188/CO.2022-0217 TIAN J T, LI H, ZHAO L L, et al. Tunable long-wave infrared optical parametric oscillator based on temperature-adjustable ZnGeP2[J]. Chinese Optics, 2023, 16(4): 861-867. doi: 10.37188/CO.2022-0217
[3]	吴玲, 娄岩, 侯欣宜, 等. 2-μm MOPA结构全光纤激光器输出特性研究[J]. 中国光学(中英文),2023,16(2):399-406. doi: 10.37188/CO.2022-0191 WU L, LOU Y, HOU X Y, et al. Output characteristics of an all-fiber laser with a 2-μm MOPA structure[J]. Chinese Optics, 2023, 16(2): 399-406. doi: 10.37188/CO.2022-0191
[4]	CORNACCHIA F, DI LIETO A, MARONI P, et al. A cw room-temperature Ho, Tm: YLF laser pumped at 1.682 μm[J]. Applied Physics B, 2001, 73(3): 191-194. doi: 10.1007/s003400100640
[5]	WANG Y, SHEN D Y, CHEN H, et al. Highly efficient Tm: YAG ceramic laser resonantly pumped at 1617 nm[J]. Optics Letters, 2011, 36(23): 4485-4487. doi: 10.1364/OL.36.004485
[6]	ANTIPOV O, NOVIKOV A, LARIN S, et al. Highly efficient 2 μm CW and Q-switched Tm³⁺: Lu₂O₃ ceramics lasers in-band pumped by a Raman-shifted erbium fiber laser at 1670 nm[J]. Optics Letters, 2016, 41(10): 2298-2301. doi: 10.1364/OL.41.002298
[7]	侯晓君, 肖薇, 李永锟, 等. 1645nm陶瓷激光共振泵浦Tm: CaYAlO₄激光器[J]. 激光与红外,2016,46(1):44-47. doi: 10.3969/j.issn.1001-5078.2016.01.008 HOU X J, XIAO W, LI Y K, et al. 1645 nm ceramic laser resonantly pumped Tm: CaYAlO₄ laser[J]. Laser & Infrared, 2016, 46(1): 44-47. (in Chinese). doi: 10.3969/j.issn.1001-5078.2016.01.008
[8]	YAO W C, WU F, ZHAO Y G, et al. Highly efficient Tm: CaYAlO₄ laser in-band pumped by a Raman fiber laser at 1.7 μm[J]. Applied Optics, 2016, 55(14): 3730-3733. doi: 10.1364/AO.55.003730
[9]	丁宇, 苗宇, 蔡军, 等. 高效率连续波运转Tm: Y₂O₃中红外固体激光器(特邀)[J]. 光电技术应用,2021,36(5):53-56,65. doi: 10.3969/j.issn.1673-1255.2021.05.009 DING Y, MIAO Y, CAI J, et al. High efficiency continuous wave Tm: Y₂O₃ mid-infrared solid laser (Invited)[J]. Electro-Optic Technology Application, 2021, 36(5): 53-56,65. (in Chinese). doi: 10.3969/j.issn.1673-1255.2021.05.009
[10]	王皖燕, 严秀莉, 周健飞, 等. 浮区法生长Tm³⁺: CaYAlO₄晶体的研究[J]. 人工晶体学报,2000,29(S1):92. WANG W Y, YAN X L, ZHOU J F, et al. Study on single crystal growth of Tm³⁺: CaYAlO₄ by floating zone method[J]. Journal of Synthetic Crystals, 2000, 29(S1): 92. (in Chinese).
[11]	QIN Z P, LIU J G, XIE G Q, et al. Spectroscopic characteristics and laser performance of Tm: CaYAlO₄ crystal[J]. Laser Physics, 2013, 23(10): 105806. doi: 10.1088/1054-660X/23/10/105806
[12]	陈晨, 许强, 孙锐, 等. 调Q锁模运转的全固态Tm: LuAG陶瓷激光器[J]. 红外与激光工程,2021,50(4):20190563. doi: 10.3788/IRLA20190563 CHEN CH, XU Q, SUN R, et al. Q-switched mode-locked all-solid-state Tm: LuAG ceramic laser[J]. Infrared and Laser Engineering, 2021, 50(4): 20190563. (in Chinese). doi: 10.3788/IRLA20190563
[13]	孙锐, 陈晨, 令维军, 等. 2017 nm和2029 nm双波长调Q锁模Tm: LuAG激光器[J]. 光学学报,2019,39(12):1214004. doi: 10.3788/AOS201939.1214004 SUN R, CHEN CH, LING W J, et al. Dual-wavelength passively Q-switched mode-locked Tm: LuAG laser operating at 2017 nm and 2029 nm[J]. Acta Optica Sinica, 2019, 39(12): 1214004. (in Chinese). doi: 10.3788/AOS201939.1214004
[14]	袁振, 令维军, 陈晨, 等. 高单脉冲能量被动调Q锁模Tm, Ho: LLF激光器[J]. 红外与激光工程,2021,50(8):20210349. doi: 10.3788/IRLA20210349 YUAN ZH, LING W J, CHEN CH, et al. High single pulse energy passively Q-switched mode-locked Tm, Ho: LLF laser[J]. Infrared and Laser Engineering, 2021, 50(8): 20210349. (in Chinese). doi: 10.3788/IRLA20210349
[15]	张明霞, 周珑, 令维军, 等. 调Q锁模运转的Tm: ZBLAN薄片激光器[J]. 激光与光电子学进展,2022,59(0):0114011. ZHANG M X, ZHOU L, LING W J, et al. Q-switched mode-locked thin-disk Tm: ZBLAN laser[J]. Laser & Optoelectronics Progress, 2022, 59(0): 0114011.
[16]	孙锐, 令维军, 陈晨, 等. 2089 nm调Q锁模Tm, Ho: CaYAlO4激光器[J]. 发光学报,2020,41(3):301-307. doi: 10.3788/fgxb20204103.0301 SUN R, LING W J, CHEN CH, et al. Passively Q-switched mode-locked Tm, Ho: CaYAlO₄ laser operating at 2089 nm[J]. Chinese Journal of Luminescence, 2020, 41(3): 301-307. (in Chinese). doi: 10.3788/fgxb20204103.0301
[17]	ZHOU W, XU X D, XU R, et al. Watt-level broadly wavelength tunable mode-locked solid-state laser in the 2 μm water absorption region[J]. Photonics Research, 2017, 5(6): 583-587. doi: 10.1364/PRJ.5.000583
[18]	KONG L CH, XIE G Q, QIN ZH P, et al. Diode-pumped mode-locked femtosecond 2-µm Tm: CaYAlO₄ laser[J]. arXiv preprint arXiv: 1707.03818, 2017.
[19]	WANG L, CHEN W D, ZHAO Y G, et al. Sub-50 fs pulse generation from a SESAM mode-locked Tm, Ho-codoped calcium aluminate laser[J]. Optics Letters, 2021, 46(11): 2642-2645. doi: 10.1364/OL.426113
[20]	张明霞, 袁振, 杜晓娟, 等. 被动调Q锁模运转Tm: LuScO₃陶瓷激光器特性[J]. 发光学报,2021,42(7):1049-1056. doi: 10.37188/CJL.20210165 ZHANG M X, YUAN ZH, DU X J, et al. Characteristics of passively Q-switched mode locked Tm: LuScO₃ ceramic laser[J]. Chinese Journal of Luminescence, 2021, 42(7): 1049-1056. (in Chinese). doi: 10.37188/CJL.20210165
[21]	WANG Y CH, LOIKO P, ZHAO Y G, et al. Polarized spectroscopy and SESAM mode-locking of Tm, Ho: CALGO[J]. Optics Express, 2022, 30(5): 7883-7893. doi: 10.1364/OE.449626