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Opt Lett. 2012 Jun 15;37(12):2388-90. doi: 10.1364/OL.37.002388.

Efficient laser operation of Yb:Lu3Ga5O12 garnet crystal.

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College of Physics, Qingdao University, 308 Ning-Xia Road, Qingdao 266071, China.


Efficient laser operation is demonstrated at room temperature with a new Yb:Lu3Ga5O12 garnet crystal. A continuous-wave output power of 5.36 W is generated at a center oscillation wavelength of 1041 nm, with an optical-to-optical efficiency of 51% and the slope efficiency of 63%. In passively Q-switched operation, the maximum average output power reaches 4.0 W (center wavelength of 1034 nm) at a repetition rate of 71 kHz, with optical-to-optical and slope efficiencies measured to be 40% and 50%, respectively. Laser pulses of 26 ns duration are generated with a pulse energy of 91 μJ and peak power of 3.5 kW.

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