量子光学学报, 2019, 25 (1): 94, 网络出版: 2019-04-05   

420 mW全固态连续单频可调谐1 542 nm激光器

420 mW all Solid State Continuous wave Single Frequency Tunable Laser at 1 542 nm
作者单位
1 山西大学光电研究所 量子光学与光量子器件国家重点实验室,山西 太原 030006
2 山西大学 极端光学协同创新中心,山西 太原 030006
摘要
设计并研制了一台激光二极管端面泵浦的全固态连续单频可调谐1 542 nm激光器。通过设计谐振腔的镀膜参数调控Er,Yb:YAB激光器的增益谱,实现了1 542 nm波段的激光振荡。在此基础上,通过优化激光晶体的厚度和谐振腔的输出耦合镜透射率等参数,并利用扭摆模腔选择单纵模技术,获得了最大输出功率为420 mW的连续单频1 541.9 nm激光运转。输出激光在3小时内的功率稳定性优于±3%,激光强度噪声在分析频率3 MHz处即达到散粒噪声极限。通过内腔电光晶体和电光标准具调控谐振腔的腔长,实现了激光器在1 541.959 nm~1 542.014 nm的波长范围内的准连续波长调谐。
Abstract
A diode-end-pumped all-solid-state continuous-wave (cw) single-frequency tunable 1 542 nm laser is designed and fabricated. The laser oscillation at wavelength around 1 542 nm is realized by tuning the gain spectrum of the Er,Yb:YAB laser system via a special coating design. The cw single-frequency laser operation is achieved by using the twisted-mode technique for mode selection. Based on the optimization of the thickness of the gain medium and the transmission of the output coupler,the laser power is scaled up to 420 mW under 5.5 W pumping. The power stability of the laser is better than ±3% during a given 3 hours. The laser intensity noise reaches the shot noise limit beyond the analysis frequency of 3 MHz. When an electro-optical crystal and an electro-optical etalon is inserted into the cavity and controlled by high voltage sources,quasi-wavelength-tuning of the cw single-frequency laser with the range of 1 541.959 nm~1 542.014 nm is demonstrated.

朱海瑞, 闫丽华, 李渊骥, 张宽收. 420 mW全固态连续单频可调谐1 542 nm激光器[J]. 量子光学学报, 2019, 25(1): 94. ZHU Hai-rui, YAN Li-hua, LI Yuan-ji, ZHANG Kuan-shou. 420 mW all Solid State Continuous wave Single Frequency Tunable Laser at 1 542 nm[J]. Acta Sinica Quantum Optica, 2019, 25(1): 94.

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