Experimental exploration of room-temperature Er:YAG cascade laser

Sibo Wang; Ye Tian; Bo Qu; Zhanda Zhu; Yongling Hui; Hong Lei; Qiang Li

doi:10.1117/12.2634431

12 May 2022 Experimental exploration of room-temperature Er:YAG cascade laser

Sibo Wang, Ye Tian, Bo Qu, Zhanda Zhu, Yongling Hui, Hong Lei, Qiang Li

Proceedings Volume 12173, International Conference on Optics and Machine Vision (ICOMV 2022); 121730F (2022) https://doi.org/10.1117/12.2634431
Event: International Conference on Optics and Machine Vision (ICOMV 2022), 2022, Guangzhou, China

Abstract

Room-temperature cascaded mid-infrared (MIR) pulsed laser output in Er:YAG crystal is reported. The 1469nm characteristic wavelength of the cascade emission is observed. The characteristic wavelength of the excited-state absorption (ESA) is determined as 1676nm. An Er:YAG crystal with concentration of 10at.% is adopted to compare the laser output energy in the cascaded and non-cascaded configuration. The maximum single pulse energy of MIR laser increases from 1.04mJ (non-cascade) to 1.51mJ (cascade), corresponding to a ratio of 45.2%. The “cyclic cascade” is considered to be the mechanism responsible for the laser performance optimization. The experimental results confirm the existance of cascade at room temperature in Er:YAG crystal. Moreover, cascade is helpful to improve the single pulse energy of MIR laser.

Citation Download Citation

Sibo Wang, Ye Tian, Bo Qu, Zhanda Zhu, Yongling Hui, Hong Lei, and Qiang Li "Experimental exploration of room-temperature Er:YAG cascade laser", Proc. SPIE 12173, International Conference on Optics and Machine Vision (ICOMV 2022), 121730F (12 May 2022); https://doi.org/10.1117/12.2634431

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