Abstract
A high power diode-pumped composite YVO<sub>4</sub>/Nd:YVO<sub>4</sub>/YVO<sub>4</sub> actively Q-switched and mode-locked laser with ring resonator is demonstrated. For mode-locking operation, the maximum average output power at 1064 nm was up to 14.4 W at a pulse repetition frequency (PRF) of 85 kHz and at the incident pump power of 40 W, with the corresponding optical conversion efficiency of 36%. The shortest mode-locked pulse width was obtained to be 117.1 picosecond (ps) at the incident pump power of 26 W and PRF of 55 kHz, with the corresponding average output power of 7.37 W and the linewidth of 0.0436 nm. The highest pulse energy and peak power were obtained to be 93.5 μJ and 0.362 MW at PRF of 5 kHz and incident pump power of 40W, respectively.
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