Thulium doped LuAG ceramics for passively mode locked lasers

Identifier:  PC:2722

Handle: https://hdl.handle.net/20.500.11797/PC2722

Authors:  Mateos, X.; Wang, Y.; Lan, R.; Li, J.; Li, C.; Suomalainen, S.; Härkönen, A.; Guina, M.; Petrov, V.; Griebner, U.

Abstract:
Passive mode-locking of a thulium doped Lu3Al5O12 ceramic laser is demonstrated at 2022 nm. By applying different near surface GaSb-based saturable absorber mirrors, stable self-starting mode-locked operation with pulse durations between 2 and 4 picoseconds was achieved at a repetition rate of 92 MHz. The SESAM mode-locked Tm:LuAG ceramic laser exhibits an excellent stability with a fundamental beat note extinction ratio of 80 dB above the noise level. Furthermore, spectroscopic properties of Tm:LuAG ceramics at room temperature are presented.