We describe an intracavity LiNbO3 Fabry-Perot etalon for frequency stabilization and tuning of a single-mode quasi-continuous-wave Ti:Al2O 3 ring laser. Taking into account the 150-µs pulse duration and the 40-Hz repetition rate of our laser, we achieve stabilization by 266-kHz modulation of 100-V peak-to-peak voltage applied to the electro-optic crystal. Tuning is ensured by the presence of a gain loop that contains a lock-in amplifier reacting with a multimorphous ceramic by means of 0–300-V dc voltage, which causes slight rotation of the LiNbO3 Fabry–Perot etalon. A continuous frequency scan of 6 GHz was made that potentially can be extended to 6 cm-1 .
© 2001 Optical Society of America
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3590) Lasers and laser optics : Lasers, titanium
(260.1180) Physical optics : Crystal optics
L. Cabaret, P. Camus, R. Leroux, and J. Philip, "Intracavity LiNbO3 Fabry-Perot etalon for frequency stabilization and tuning of a single-mode quasi-continuous-wave titanium:sapphire ring laser," Opt. Lett. 26, 983-985 (2001)