We present a simple way to achieve single-frequency operation by using a fiber-coupled diode butt-coupling-pumped Nd:YVO4 laser in a flat–flat cavity. Single-mode outputs of 620 and 260 mW for fundamental and second-harmonic wavelengths were obtained when the laser was pumped by an 1100-mW fiber-coupled laser diode. Experimental results show that thermal effects provide not only a stable resonator with a good overlap of laser mode and pump size but also enhance single-frequency performance.
© 1998 Optical Society of America
Original Manuscript: April 7, 1997
Revised Manuscript: May 28, 1997
Published: January 20, 1998
Yung-Fu Chen, Ching-Fen Kao, and Ting-Ming Huang, "Single-mode operation and frequency doubling of fiber-coupled diode butt-coupling-pumped Nd:YVO4 lasers," Appl. Opt. 37, 518-521 (1998)