We report on a widely tunable, diode-pumped, continuous-wave, single-frequency Cr<sup>3+</sup>:LiSrAlF<sub>6</sub> laser with a novel double-ring cavity configuration. The optical diode and the tuning element were located in the ring subcavity to decrease their insertion loss. Using an 1800-lines/mm grating as the tuning element, we obtained a laser emission of 20-mW output power at 870 nm and a tuning range of from 800 to 936 nm. When we used a 1200-lines/mm grating with a higher diffraction efficiency, the laser had a slightly wider tuning range of from 800 to 938 nm. However, the output power decreased at this tuning range.
© 1998 Optical Society of America
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3500) Lasers and laser optics : Lasers, erbium
(140.3600) Lasers and laser optics : Lasers, tunable
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
Yuzo Nagumo, Noboru Taguchi, and Humio Inaba, "Widely Tunable Continuous-Wave CR3+:LiSrAlF6 Ring Laser from 800 to 936 nm," Appl. Opt. 37, 4929-4932 (1998)