High Power Single Frequency Tm:Y2O3 Ceramic Laser at 2015 nm

High Power Single Frequency Tm:Y2O3 Ceramic Laser at 2015 nm

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We report on high usssa pro m softballs power, single-frequency operation of a compact Tm:Y2O3 ceramic laser in 2 μm spectral region employing a volume Bragg grating in a simple linear resonator to serve simultaneously as a resonator mirror and mode selector.The home developed laser quality Tm:Y2O3 ceramic sample has a Tm doped concentration of 2 at.% and pumped with a visceratuant fiber coupled 793 nm laser diode.

Up to 1.5 W of CW single frequency output power at 2014.9 nm has been generated, corresponding to a slope efficiency of 37.

9% with respect to absorbed pump power.M2 factor of the output beam was measured to be ∼1.03.