16 April 2008 Record performance from a passively Q-switched Yb:Er:YVO4 laser
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Various lengths of Yb:Er:YVO4 were end pumped by a quasi-continuous wave 967 nm diode laser. The best slope efficiency with respect to absorbed pump power for gain switched operation was 8 % for a 5 mm long crystal. Co:MgAl2O4 saturable absorbers of 98 % and 93 % initial transmission were used to passively Q-switch the cavity. For the 98 % initial transmission absorber, average pulses energies of 44 µJ were measured. The average pulse width and repetition rate were ~256 ns and 36 kHz, respectively. For the 93% initial transmission absorber, a single output pulse of 37 µJ energy and 22 ns duration per pump pulse was measured when the crystal was pumped for a pumping duration of 1.7 ms.
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Yuen H. Tsang, Colin J. Mercer, David J. Binks, "Record performance from a passively Q-switched Yb:Er:YVO4 laser", Proc. SPIE 6998, Solid State Lasers and Amplifiers III, 69980U (16 April 2008); doi: 10.1117/12.781245; https://doi.org/10.1117/12.781245


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