Lasing in 15 atm CO 2 cell optically pumped by a Fe:ZnSe laser

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

doi:10.1364/OE.434670

Lasing in 15 atm CO ₂ cell optically pumped by a Fe:ZnSe laser

Journal Article · Thu Sep 16 00:00:00 EDT 2021 · Optics Express

DOI:https://doi.org/10.1364/OE.434670· OSTI ID:1820491

Tovey, Dana; Pigeon, Jeremy; Tochitsky, Sergei; Louwrens, Gerhard; Ben-Zvi, Ilan; ; ; Karki, Krishna; ; Joshi, Chan

10 µm lasing is studied in a compact CO ₂ -He cell pressurized up to 15 atm when optically pumped by a ∼50 mJ Fe:ZnSe laser tunable around 4.3 µm. The optimal pump wavelength and partial pressure of CO ₂ for generating 10 µm pulses are found to be ∼4.4 µm 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 µs at pressures above 10 atm, indicating the feasibility of using high-pressure optically pumped CO ₂ for the efficient amplification of picosecond 10 µm pulses.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0018378

OSTI ID:: 1820491

Journal Information:: Optics Express, Journal Name: Optics Express Journal Issue: 20 Vol. 29; ISSN 1094-4087; ISSN OPEXFF

Publisher:: Optical Society of AmericaCopyright Statement

Country of Publication:: United States

Language:: English

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Lasing in 15 atm CO ₂ cell optically pumped by a Fe:ZnSe laser