Frequency stabilization of Nd:YAG lasers to {sup 133}Cs{sub 2} sub-Doppler lines near 1064 nm
- Department of Electrical Engineering---Physical Electronics, Faculty of Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, (Israel) 69978
Sub-Doppler lines of Cs{sub 2} were investigated with a Nd:YAG laser. Modulation transfer spectroscopy and FM spectroscopy were applied to yield error signals that were used for absolute stabilization of the laser frequency. The frequency stability was characterized with an I{sub 2}-locked dual-wavelength Nd:YAG frequency reference. The root Allan variance of the beat frequency reached a minimum of 1.3{times}10{sup {minus}11} (beat frequency fluctuations of 3.65 kHz) for a measurement time of 20 s. Absolute frequencies of several Cs{sub 2} lines were determined with an accuracy of {approximately}1 MHz. Further improvement in sensitivity was demonstrated by insertion of the absorption cell into a Fabry{endash}Perot cavity. While the laser was locked to the cavity, the cavity length was modulated and the transmitted probe beam was detected at the third harmonic of the modulation frequency. {copyright} {ital 1996 Optical Society of America.}
- OSTI ID:
- 286562
- Journal Information:
- Journal of the Optical Society of America, Part B: Optical Physics, Vol. 13, Issue 7; Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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