Abstract
Stable, enhanced intracavity frequency doubled Cr,Nd:YAG self-Q-switched miniature green laser with gray tracking resistant KTP (GTR-KTP) crystal has been demonstrated at room temperature. The maximum average output power of 1.2 W at 532 nm was achieved at the absorbed pump power of 7 W, and the corresponding optical-to-optical efficiency was 17%. Laser pulses with a pulse energy of 16 µJ and peak power of 1.3 kW were achieved. The laser operated from 6.7 kHz to 75 kHz with the absorbed pump power. Near-diffraction-limited laser beam quality with M2 less than 1.5 was obtained. The stable laser operation was achieved with less than 3% fluctuation of the average output power within 2 h.
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