Tovey Dana, Pigeon Jeremy, Tochitsky Sergei, Louwrens Gerhard, Ben-Zvi Ilan, Martyshkin Dmitry, Fedorov Vladimir, Karki Krishna, Mirov Sergey, Joshi Chan
Opt Express. 2021 Sep 27;29(20):31455-31464. doi: 10.1364/OE.434670.
10 µm lasing is studied in a compact CO-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 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 for the efficient amplification of picosecond 10 µm pulses.
在一个紧凑的CO-He气室中进行了10微米激光研究，该气室在高达15个大气压下加压，由一台波长约4.3微米、能量约50毫焦且可调谐的Fe:ZnSe激光器进行光泵浦。发现产生10微米脉冲时的最佳泵浦波长和CO的分压分别约为4.4微米和0.75个大气压。在未进行腔优化的情况下，在总压力为7个大气压时，光到光的转换效率达到了约10%。在压力高于10个大气压时，测得增益寿命约为1微秒，这表明使用高压光泵浦CO来高效放大皮秒10微米脉冲是可行的。
