We have implemented a tunable laser frequency lock with a wide recapture range and low sensitivity to temperature fluctuation, based on electronically power-normalized Doppler-broadened absorption spectra. The method requires no frequency modulation. A distributed-feedback diode laser locked to this system exhibits submegahertz stability over many hours. It has been used to magneto-optically trap rubidium atoms for a full day.
© 2008 Optical Society of America
Lasers and Laser Optics
Original Manuscript: February 1, 2008
Manuscript Accepted: March 1, 2008
Published: April 28, 2008
Lucas J. Willis and Michael J. Lim, "Temperature-insensitive laser frequency stabilization with magnetic tuning," Appl. Opt. 47, 2312-2316 (2008)