Diode laser spectroscopy in a Ca atomic beam

The frequency of an extended cavity diode laser has been stabilized to a resonance of a high- Q optical resonator by using the rf phase modulation technique. A servo bandwidth of 200 kHz has been achieved using a two channel control loop with the fast corrections applied to the injection current and...

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Bibliographic Details
Published in:Optics communications 1994-04, Vol.107 (1), p.54-60
Main Authors: Celikov, A., Riehle, F., Velichansky, V.L., Helmcke, J.
Format: Article
Language:English
Subjects:
Atomic and molecular physics
Atomic properties and interactions with photons
Atomic spectra
Exact sciences and technology
Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Laser spectroscopy
Physics
Visible and ultraviolet spectra
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Summary:The frequency of an extended cavity diode laser has been stabilized to a resonance of a high- Q optical resonator by using the rf phase modulation technique. A servo bandwidth of 200 kHz has been achieved using a two channel control loop with the fast corrections applied to the injection current and the slow ones to a piezo-driven external cavity mirror of the laser. The laser has been utilized for separated field excitation of the 1S 0- 3P 1 intercombination line (λ ≊ 657 nm) in a Ca atomic beam. We have observed optical Ramsey resonances, with the recoil splitting of 23.1 kHz being resolved and the spectral line widths have been as small as 10 kHz.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(94)90102-3