For high-precision frequency-based applications of lasers, the frequency difference between two independent lasers is accurately stabilized and maintained. We describe a simple and novel feed-forward method with an acousto-optic modulator. This method can be used in optical phase-locked loops.
© 1999 Optical Society of America
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(140.3570) Lasers and laser optics : Lasers, single-mode
(140.3600) Lasers and laser optics : Lasers, tunable
M. Kourogi, B. Widiyatmoko, K. Imai, T. Shimizu, and M. Ohtsu, "Accurate relative frequency cancellation between two independent lasers," Opt. Lett. 24, 16-18 (1999)