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Rb-stabilized laser at 1572 nm for CO2 monitoring
Résumé We have developed a compact rubidium-stabilized laser system to serve as optical frequency reference in the 1.55-m wavelength region, in particular for CO2 monitoring at 1572 nm. The light of a fiber-pigtailed distributed feedback (DFB) laser emitting at 1560 nm is frequency-doubled and locked to a sub-Doppler rubidium transition at 780 nm using a 2-cm long vapor glass cell. Part of the DFB laser light is modulated with an electro-optical modula-tor enclosed in a Fabry-Perot cavity, generating an optical frequency comb with spectral cover-age extending from 1540 nm to 1580 nm. A second slave DFB laser emitting at 1572 nm and offset-locked to one line of the frequency comb shows a relative frequency stability of 1·10-11at 1 s averaging time and <4·10-12 from 1 hour up to 3 days.
   
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Citation R. Matthey-De-L'Endroit, et al., "Rb-stabilized laser at 1572 nm for CO2 monitoring," Journal of Physics : Conference Series, vol. 723, p. 1-2, July 2016.
   
Type Article de périodique (Anglais)
Date de publication 4-7-2016
Nom du périodique Journal of Physics : Conference Series
Volume 723
Pages 1-2
URL https://iopscience.iop.org/article/10.1088/1742-6596/723/...