title: Passive Q-switching by Tm3+co-doping of a Yb3+-fiber laser.
abstract: Q-switching of a wavelength tunable Yb3+-doped double-clad fiber laser by a Tm3+-codoping in the gain fiber is demonstrated. This system showed up to 2.4 W output power, up to 140 kHz repetition rate, a maximum pulse energy of 21.8 microJ and a minimum pulse duration of 1.1 micros. Using a grating pair in Littrow-Littman configuration the emission wavelength was tunable between 1055 nm and 1090 nm. The output radiation showed a maximum spectral linewidth of 4 GHz.
authors.forename: P
authors.initials: P
authors.lastname: Adel
authors.forename: M
authors.initials: M
authors.lastname: Auerbach
authors.forename: Carsten
authors.initials: C
authors.lastname: Fallnich
authors.forename: S
authors.initials: S
authors.lastname: Unger
authors.forename: H
authors.initials: H
authors.lastname: Müller
authors.forename: J
authors.initials: J
authors.lastname: Kirchhof