Room temperature Fe2+:ZnSe laser pumped by non-chain pulsed HF laser

Qikun Pan; Jijiang Xie; Chunrui Wang; Yang He; Deyang Yu; Kuo Zhang; Fei Chen

doi:10.1117/12.2524330

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29 March 2019 Room temperature Fe²⁺:ZnSe laser pumped by non-chain pulsed HF laser

Qikun Pan, Jijiang Xie, Chunrui Wang, Yang He, Deyang Yu, Kuo Zhang, Fei Chen

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Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 110462A (2019) https://doi.org/10.1117/12.2524330
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China

Abstract

An experimental setup of mid-infrared Fe:ZnSe laser operating at room temperature has been established, which was end-pumped by a non-chain pulsed HF laser. The temperature has significant influence on the level lifetime of Fe:ZnSe laser. As the crystal temperature changes from 85 to 295 K, the level lifetime of Fe ions changes from 57 to 0.35 μs, it is important for matching the pump pulse width and the level lifetime. Electronic excitation HF laser with short pulsed width is a good pump source for Fe²⁺:ZnSe laser at room temperature. For the Fe²⁺:ZnSe crystal with size of 20×20mm, when the pumping spot diameters is lower than 9.2mm, the phenomenon of transversal parasitic oscillation could been suppressed effectively. At room temperature, the output energy of Fe²⁺:ZnSe reaches 294mJ, the slope efficiency is about 36%, and the optical to optical efficiency respecting to the pump energy is 34%.

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Qikun Pan, Jijiang Xie, Chunrui Wang, Yang He, Deyang Yu, Kuo Zhang, and Fei Chen "Room temperature Fe²⁺:ZnSe laser pumped by non-chain pulsed HF laser", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 110462A (29 March 2019); https://doi.org/10.1117/12.2524330

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