A frequency-doubled diode laser spectrometer in the blue-wavelength region with a continuous-frequency tuning range of up to ∼7 GHz has been developed, comprising a powerful fundamental light source based on a master/slave laser combination coupled with a crystal for second-harmonic generation in a power-enhancement cavity. It has been employed for the observation of saturated absorption spectra in hyperfine transitions of atomic rubidium with the aid of a modulation transfer spectroscopic technique, and also the frequency stabilization to one of them has been demonstrated, suggesting the possibility of the establishment of a precision optical frequency marker in the blue range. A relative stability of better than is estimated based on the locked error signal in the preliminary stabilization. With a further study of the frequency instability and uncertainty, in addition to supplementary improvements of apparatus, one may expect a realization of a stabilized laser in the blue-spectral domain. Details of the developed blue-light source are described and the demonstrated results of the rubidium spectroscopy are also described and discussed.
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July 2000
Research Article|
July 01 2000
Doppler-free modulation transfer spectroscopy of rubidium transitions using a frequency-doubled diode laser blue-light source
Nobuhiko Ito
Nobuhiko Ito
National Research Laboratory of Metrology, 1-1-4 Umezono, Tsukuba, Ibaraki 305-8563, Japan
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Rev. Sci. Instrum. 71, 2655–2662 (2000)
Article history
Received:
December 02 1999
Accepted:
March 29 2000
Citation
Nobuhiko Ito; Doppler-free modulation transfer spectroscopy of rubidium transitions using a frequency-doubled diode laser blue-light source. Rev. Sci. Instrum. 1 July 2000; 71 (7): 2655–2662. https://doi.org/10.1063/1.1150672
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