1.
Opt Express
; 29(20): 31455-31464, 2021 Sep 27.
Artigo
em Inglês
| MEDLINE
| ID: mdl-34615237
RESUMO
10 µm lasing is studied in a compact CO2-He cell pressurized up to 15 atm when optically pumped by a â¼50 mJ Fe:ZnSe laser tunable around 4.3 µm. The optimal pump wavelength and partial pressure of CO2 for generating 10 µm pulses are found to be â¼4.4 µm and 0.75 atm, respectively. Without cavity optimization, the optical-to-optical conversion efficiency reached â¼10% at a total pressure of 7 atm. The gain lifetime is measured to be â¼1 µs at pressures above 10 atm, indicating the feasibility of using high-pressure optically pumped CO2 for the efficient amplification of picosecond 10 µm pulses.