Subkilohertz enhanced-power diode-laser spectrometer in the visible.
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.
Vassiliev
V
V
Physikalisch-Technische Bundesanstalt, D-38116, Braunschweig, Germany.
Velichansky
V
V
Kersten
P
P
Trebst
T
T
Riehle
F
F