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Continuous wave and Q-switched laser output of laser-diode-end-pumped disordered Nd:LGS laser

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Abstract

Laser-diode (LD)-pumped high-power cw and passively Q-switched laser performance has been demonstrated with a disordered Nd-doped La3Ga5SiO14 (Nd:LGS) crystal for the first time to our knowledge. A cw output power of 2.25W was obtained under an absorbed pump power of 7.84W with a slope efficiency of 30.2%. Using a Cr:YAG as a saturable absorber, the passively Q-switched laser was achieved. The maximum pulse energy, shortest pulse width, and highest peak power were measured to be 117.5μJ, 23.4ns, and 5.02kW, respectively.

© 2009 Optical Society of America

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