Sub-Nanosecond, Room-Temperature, Mid-IR Fe:ZnSe Gain-Switched Laser: Experimental Characterization and Modeling

Ghimire, Saugat; Danilin, Daniil; Martyshkin, Dmitry; Fedorov, Vladimir; Mirov, Sergey

doi:10.3390/photonics12030254

Sub-Nanosecond, Room-Temperature, Mid-IR Fe:ZnSe Gain-Switched Laser: Experimental Characterization and Modeling

Journal Article · Wed Mar 12 00:00:00 EDT 2025 · Photonics

DOI:https://doi.org/10.3390/photonics12030254· OSTI ID:2530685

Ghimire, Saugat; ; Martyshkin, Dmitry; Fedorov, Vladimir;

We present the modeling and experimental characterization of a room-temperature, sub-nanosecond, gain-switched (GS) Fe:ZnSe laser operating at 4.4–4.8 μm. As pump sources, we used a 2.79 µm Q-switched Cr:Er:YSGG laser with a pulse duration of 52 ns and the 2.98 μm idler of a Nd:YAG pumped KTA-OPO system with a pulse duration of 9 ns. The shortest pulse durations were measured to be 1.4 ns and 0.7 ns under excitation by the Cr:Er:YSGG laser and KTA-OPO system, respectively. The developed Fe:ZnSe laser model showed good agreement with the experimental results. Optimization of the laser parameters based on model simulations suggests that an Fe:ZnSe microchip laser configuration could be achieved with a pulse duration of ~250 ps and an efficiency of ~20%.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0018378

OSTI ID:: 2530685

Journal Information:: Photonics, Journal Name: Photonics Journal Issue: 3 Vol. 12; ISSN PHOTC5; ISSN 2304-6732

Publisher:: MDPI AGCopyright Statement

Country of Publication:: Switzerland

Language:: English

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