Remillard J, Uy D, Weber W, Capasso F, Gmachl C, Hutchinson A, Sivco D, Baillargeon J, Cho A
Opt Express. 2000 Sep 25;7(7):243-8. doi: 10.1364/oe.7.000243.
A quantum cascade distributed feedback laser operating at 5.2 microm is used to obtain sub-Doppler resolution limited saturation features in a Lamb-dip experiment on the R(13.5)1/2 and R(13.5)3/2 transitions of NO. The dips appear as transmission spikes with full widths of ~ 4.3 MHz. At this resolution the 73 MHz _-doubling of the R(13.5)3/2 line, which is normally obscured by the 130 MHz Doppler broadening, is easily resolved.
一台工作在5.2微米的量子级联分布反馈激光器，被用于在一氧化氮（NO）的R(13.5)1/2和R(13.5)3/2跃迁的兰姆凹陷实验中获取亚多普勒分辨率极限的饱和特征。凹陷呈现为全宽约4.3兆赫兹的透射尖峰。在这个分辨率下，通常被130兆赫兹多普勒展宽所掩盖的R(13.5)3/2谱线的73兆赫兹精细结构分裂很容易被分辨出来。
