volume 75, issue 8, pages 841-846

PbS-doped phosphate glasses saturable absorbers for 1.3-μm neodymium lasers

V G Savitski 1
N.N Posnov 1
P.V. Prokoshin 1
A.M. Malyarevich 1
K.V. Yumashev 1
M.I Demchuk 1
A A Lipovskii 2
1
 
International Laser Center, #65/17 F. Skaryna Ave., 220027 Minsk, Belarus, , BY
Publication typeJournal Article
Publication date2002-12-01
General Physics and Astronomy
Physics and Astronomy (miscellaneous)
General Engineering
Abstract
Passive mode locking and saturable absorber Q-switching of neodymium lasers at 1.3 μm with PbS-doped phosphate glasses are demonstrated. Q-switched pulses of 120 ns (0.1 μJ) in duration (energy) and the average output power of 3 mW from a quasi-cw diode-pumped Nd3+:KGW laser and ultrashort pulses of a maximum of 250 μJ in energy and 150 ps in duration from a Nd3+:YAP laser were obtained. The bleaching decay rate of the samples was found to increase with the Quantum Dot’s size decreasing due to the enhancement of quantum confinement effects for smaller dots and stronger overlapping of the electron and trap state wave functions.

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