Abstract

We report on a high-performance diode-laser spectrometer operating near 657  nm with narrow linewidth <0.6 kHz, enhanced power (as much as 40  mW), and low drift <10 Hz/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

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