Danielewicz E J, Galantowicz T A, Foote F B, Reel R D, Hodges D T
Opt Lett. 1979 Sep 1;4(9):280-2. doi: 10.1364/ol.4.000280.
A parametric study to clarify efficiency limiting mechanisms and to maximize the performance of the CH(2)F(2) laser has led to the discovery of five new CO(2) pump lines and ten new FIR laser lines. The wavelengths of the new lines fill a previous gap in the spectrum of strong cw FIR laser lines. With appropriate cavity design, measured conversion efficiencies exceed 30% of the maximum theoretical limit. Optimization of the output coupling for the strongest line at lambda = 184.6 microm has doubled the maximum output power from the identical system using the lambda = 118.8-microum line of CH(3)OH. The exceptionally high conversion efficiency (33%) occurring at the highest-available CO(2) pump power indicates that the limits on scaling to higher output powers have not yet been reached. The results confirm the high-performance capability of the CH(2)F(2) laser, the strongest cw optically pumped FIR laser reported to date.
一项旨在阐明效率限制机制并最大化CH₂F₂激光器性能的参数研究，导致发现了五条新的CO₂泵浦线和十条新的远红外激光线。这些新线的波长填补了之前强连续波远红外激光线光谱中的一个空白。通过适当的腔设计，测得的转换效率超过了最大理论极限的30%。对于波长为184.6微米的最强谱线，优化输出耦合使使用CH₃OH的118.8微米谱线的相同系统的最大输出功率增加了一倍。在可用的最高CO₂泵浦功率下出现的异常高的转换效率（33%）表明，尚未达到向更高输出功率扩展的极限。结果证实了CH₂F₂激光器的高性能能力，它是迄今为止报道的最强的连续波光泵浦远红外激光器。
