We report on a high-performance diode-laser spectrometer operating near 657 nm with narrow linewidth (<0.6kHz) , enhanced power (as much as 40 mW), and low drift (<10Hz/s) . The spectrometer comprised an extended-cavity diode-laser frequency stabilized to a high-finesse optical resonator and a broad-area antireflection coated laser diode as an amplifier with a single-lobe emission pattern of good spatial purity. The spectrometer was used to record time-domain optical Ramsey spectra of laser-cooled Ca atoms with a resolution of 0.6 kHz.
© 1998 Optical Society of America
V. Vassiliev, V. Velichansky, P. Kersten, T. Trebst, and F. Riehle, "Subkilohertz enhanced-power diode-laser spectrometer in the visible," Opt. Lett. 23, 1229-1231 (1998)