Coherence transfer from 1064 nm to 578 nm using an optically referenced frequency comb
CHINESE PHYSICS B(2015)
摘要
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(-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.
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关键词
coherence transfer,optical frequency comb,narrow linewidth laser
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