We demonstrate 250 mW of single-frequency 532-nm output from a simple intracavity-doubled Nd:YVO4 laser, pumped with 1.2 W from a fiber-coupled diode laser. The laser can be frequency chirped smoothly over ~17 GHz while maintaining a single-frequency green output of greater than 200 mW. A short Fabry–Perot cavity is used, and single-frequency operation is enforced by means of a birefringent filter that utilizes the birefringence of both the KTP doubling crystal and the Nd:YVO4 laser crystal with polarization-dependent loss from a glass Brewster plate combined with polarization-dependent gain from the laser crystal.
© 2000 Optical Society of America
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.7300) Lasers and laser optics : Visible lasers
Graham J. Friel, Alan J. Kemp, Tanya K. Lake, and Bruce D. Sinclair, "Compact and Efficient Nd:YVO 4 Laser that Generates a Tunable Single-Frequency Green Output," Appl. Opt. 39, 4333-4337 (2000)