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Experimental setup of the ceramic laser for short pulse generation.
Output power as a function of input pump power for cw and mode locking operations. The inset shows output beam intensity distribution at maximum output power. The mean factor of the pulsed output was .
Pulse duration and time-bandwidth product (TBP) as a function of average output power. The solid line and dashed lines indicate fitted pulse duration of measured pulse with output coupling of 2.5% and calculated pulse duration by using estimated nonlinear refractive index of . The closed triangle shows further optimized pulse duration with 0.5% output coupler.
Second-harmonic autocorrelation trace and spectrum (inset) for the shortest-pulse generation with a 0.5% output coupler. The solid line indicates ideal shape.
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