Abstract

A diode end-pumped Nd:YAG microlaser passively Q-switched by Cr4+:YAG with performances controlled by a volume Bragg grating (VBG) output coupler has been developed. Compared with operation at room temperature, the Q-switched laser pulse energy was increased, by a factor of 2 or more, by elevating the Nd:YAG temperature and locking the wavelength of emission with the VBG. Furthermore, the emission wavelength was tuned over 0.7nm bandwidth by changing the VBG temperature while maintaining laser pulses of millijoule-level energy and short (less than 4ns) duration.

© 2010 Optical Society of America

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