Savchenkov Anatoliy A, Ilchenko Vladimir S, Di Teodoro Fabio, Belden Paul M, Lotshaw William T, Matsko Andrey B, Maleki Lute
Opt Lett. 2015 Aug 1;40(15):3468-71. doi: 10.1364/OL.40.003468.
We report on the generation of mid-infrared Kerr frequency combs in high-finesse CaF2 and MgF2 whispering-gallery-mode resonators pumped with continuous-wave room-temperature quantum cascade lasers. The combs were centered at 4.5 μm, the longest wavelength to date. A frequency comb wider than one half of an octave was demonstrated when approximately 20 mW of pump power was coupled to an MgF2 resonator characterized with quality factor exceeding 10(8).
我们报道了在高精细度的CaF2和MgF2回音壁模式谐振器中产生中红外克尔频率梳的情况，该谐振器由连续波室温量子级联激光器泵浦。这些频率梳的中心波长为4.5μm，是迄今为止最长的波长。当大约20mW的泵浦功率耦合到品质因数超过10^8的MgF2谐振器时，展示出了超过一个八度的一半宽度的频率梳。
