title: Thermally driven dual-frequency Q-switching of Nd:YGd2Sc2Al2GaO12 ceramic laser.
abstract: Multi-wavelength operation of Q-switched Nd-doped YGd(2)Sc(2)Al(2)GaO(12) garnet ceramic lasers has been investigated. Dual-wavelength emission around ~1.06 µm has been demonstrated both in the actively and passively Q-switched configurations. The ratio of output energy between the two laser wavelengths was driven by the temperature elevation caused by pumping. Passively Q-switched operation yields dual-frequency emission of two unsynchronized laser pulses carried by distinct transverse modes whereas active Q-switched configuration offers the possibility of synchronizing emission at the two wavelengths.
authors.forename: G
authors.initials: G
authors.lastname: Alombert-Goget
authors.forename: A
authors.initials: A
authors.lastname: Brenier
authors.forename: Y
authors.initials: Y
authors.lastname: Guyot
authors.forename: A
authors.initials: A
authors.lastname: Labruyère
authors.forename: B
authors.initials: B
authors.lastname: Faure
authors.forename: V
authors.initials: V
authors.lastname: Couderc