Passive Q switching of Er:glass (1.53 μm) with a new, robust, solid-state saturable absorber, Co2+:Y3Sc2Ga3O12, has been demonstrated. Q-switched pulses of 20 ns and 4 mJ of energy were obtained. An absorption cross section of 5 × 10−20 cm2 was measured. Preliminary results for a Co2+:Y3Al5O12 saturable absorber Q switch are also discussed.
© 1995 Optical Society of America
Original Manuscript: July 1, 1994
Published: February 1, 1995
Marly B. Camargo, Milan Kokta, Robert D. Stultz, and Milton Birnbaum, "Co2+:YSGG saturable absorber Q switch for infrared erbium lasers," Opt. Lett. 20, 339-341 (1995)