Coherence transfer from 1064 nm to 578 nm using an optically referenced frequency comb

A laser at 578 nm is phase-locked to an optical frequency comb (OFC) which is optically referenced to a subhertz-linewidth laser at 1064 nm. Coherence is transferred from 1064 nm to 578 nm via the OFC. By comparing with a cavity-stabilized laser at 578 nm. the absolute linewidth of 1.1 Hz and the fr...

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Bibliographic Details
Published in:Chinese physics B 2015-07, Vol.24 (7), p.74202-1-074202-4
Main Authors: Fang, Su, Jiang, Yan-Yi, Chen, Hai-Qin, Yao, Yuan, Bi, Zhi-Yi, Ma, Long-Sheng
Format: Article
Language:English
Subjects:
Coherence
Instability
Lasers
Optical frequency
Stability
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Summary:A laser at 578 nm is phase-locked to an optical frequency comb (OFC) which is optically referenced to a subhertz-linewidth laser at 1064 nm. Coherence is transferred from 1064 nm to 578 nm via the OFC. By comparing with a cavity-stabilized laser at 578 nm. the absolute linewidth of 1.1 Hz and the fractional frequency instability of 1.3 x 10 super(-15) at an averaging time of 1 s for each laser at 578 nm have been determined, which is limited by the performance of the reference laser for the OFC.
ISSN:1674-1056
1741-4199
DOI:10.1088/1674-1056/24/7/074202