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arXiv · 2106.12143

Lasing in 15 atm CO2 cell optically pumped by a Fe:ZnSe laser

Dana Tovey·Jeremy Pigeon·Sergei Tochitsky·Gerhard Louwrens·Ilan Ben-Zvi·Dmitry Martyshkin·Vladimir Fedorov·Krishna Karki·Sergei Mirov·Chan Joshi
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Abstract

10 {\mu}m lasing is studied in a compact CO2-He cell pressurized up to 15 atm when optically pumped by a ~50 mJ Fe:ZnSe laser tunable around 4.3 {\mu}m. The optimal pump wavelength and partial pressure of CO2 for generating 10 {\mu}m pulses are found to be ~4.4 {\mu}m and 0.75 atm, respectively. Without cavity optimization, the optical-to-optical conversion efficiency reached ~10% at a total pressure of 7 atm. The gain lifetime is measured to be ~1 {\mu}s at pressures above 10 atm, indicating the feasibility of using high-pressure optically pumped CO2 for the efficient amplification of picosecond 10 {\mu}m pulses.

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Dana Tovey, Jeremy Pigeon, Sergei Tochitsky, Gerhard Louwrens, Ilan Ben-Zvi, Dmitry Martyshkin, Vladimir Fedorov, Krishna Karki, Sergei Mirov, Chan Joshi. 2021-06-23. Lasing in 15 atm CO2 cell optically pumped by a Fe:ZnSe laser. https://doi.org/10.1364/oe.434670

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