title: Intracavity absorption spectroscopy with a Nd(3+)-doped fiber laser.
abstract: 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.
authors.forename: R
authors.initials: R
authors.lastname: Böhm
authors.forename: A
authors.initials: A
authors.lastname: Stephani
authors.forename: V M
authors.initials: VM
authors.lastname: Baev
authors.forename: P E
authors.initials: PE
authors.lastname: Toschek