Broad bandwidth interference filter-stabilized external cavity diode laser with narrow linewidth below 100 kHz

Interference filter-stabilized external cavity diode lasers （ECDLs） have properties of simple configurations, high sta- bilities, and narrow linewidths. However, the interference filter used in common ECDL designs requires an ultra-narrow bandwidth （about 0.3 nm） to achieve mode selection, that is c...

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Bibliographic Details
Published in:Chinese physics B 2018, Vol.27 (1), p.381-384
Main Authors: Pan, Guan-Zhong, Guan, Bao-Lu, Xu, Chen, Li, Peng-Tao, Yang, Jia-Wei, Liu, Zhen-Yang
Format: Article
Language:English
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Summary:Interference filter-stabilized external cavity diode lasers （ECDLs） have properties of simple configurations, high sta- bilities, and narrow linewidths. However, the interference filter used in common ECDL designs requires an ultra-narrow bandwidth （about 0.3 nm） to achieve mode selection, that is considerably expensive and not yet available for a wide range of wavelengths. In this paper, a robust ECDL using an available broad bandwidth （about 4 nm） interference filter as the wavelength discriminator is constructed and tested. The ECDL demonstrated a narrow Lorentzian fitted linewidth of 95 kHz and a spectral purity of 2.9 MHz. The long-term frequency stability of the ECDL reaches 5.59 x 10 12.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/27/1/014204