We present a simple way to achieve single-frequency operation by using a fiber-coupled diode butt-coupling-pumped Nd:YVO<sub>4</sub> 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
(140.2020) Lasers and laser optics : Diode lasers
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)