Böhm R, Stephani A, Baev V M, Toschek P E
Opt Lett. 1993 Nov 15;18(22):1955-7. doi: 10.1364/ol.18.001955.
A broadband Nd(3+)-doped fiber laser has been operated in an external cavity by pumping with an Ar(+)-ion laser. The emission spectrum of the fiber laser shows high sensitivity to intracavity absorption. The equivalent absorber path length is 15 km; with a loss-reduced setup that includes pumping by a diode laser this path length is 150 km. The spectrum of atmospheric absorption in the range from 1.065 to 1.145 microm has been recorded by stepwise tuning of the 0.3-nm-wide laser emission band by an intracavity prism.
一台宽带掺钕（Nd(3+)）光纤激光器通过氩离子（Ar(+)）激光泵浦在外部腔中运行。光纤激光器的发射光谱对腔内吸收表现出高灵敏度。等效吸收路径长度为15千米；在包括二极管激光泵浦的低损耗装置中，该路径长度为150千米。通过腔内棱镜对0.3纳米宽的激光发射带进行逐步调谐，记录了1.065至1.145微米范围内的大气吸收光谱。
