We describe frequency locking of a diode laser to a two-photon transition of rubidium using the Zeeman modulation technique. We locked and tuned the laser frequency by modulating and shifting the two-photon transition frequency with ac and dc magnetic fields. We achieved a linewidth of 500 kHz and continuous tunability over 280 MHz with no laser frequency modulation.
© 2000 Optical Society of America
Stanislav Baluschev, Nir Friedman, Lev Khaykovich, Dina Carasso, Ben Johns, and Nir Davidson, "Tunable and Frequency-Stabilized Diode Laser with a Doppler-Free Two-Photon Zeeman Lock," Appl. Opt. 39, 4970-4974 (2000)