Rb-stabilized laser at 1572 nm for CO2 monitoring. (June 2016)

• Record Type: Journal Article
• Authors: Matthey, R; Moreno, W; Gruet, F; Brochard, P; Schilt, S; Mileti, G
• Is Part Of: Journal of physics. Volume 723(2016)
• Publication Date: 2016-06
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/723/1/012034
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We have developed a compact rubidium-stabilized laser system to serve as optical frequency reference in the 1.55-μm 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 modulator enclosed in a Fabry-Perot cavity, generating an optical frequency comb with spectral coverage 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 -11 at 1 s averaging time and <4.10 -12 from 1 hour up to 3 days.