Coherence transfer from 1064 nm to 578 nm using an optically referenced frequency comb |
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Fang Su, Jiang Yan-Yi†
 , Chen Hai-Qin, Yao Yuan, Bi Zhi-Yi, Ma Long-Sheng |
| (a) Experimental setup and measurement diagram for the narrow-linewidth lasers. The inset graph at the right corner is the spectrum of f bL observed on a fast Fourier transform (FFT) spectrum analyzer with the resolution bandwidth (RBW) of 0.477 mHz when f L was phase-locked to the narrow-linewidth comb. (b) The generation of 578-nm lasers. f 1064 is the optical frequency of the reference laser at 1064 nm for OFC stabilization. f L and f T are the optical frequencies of the slave laser at 578 nm and the test laser at 578 nm, respectively. f b1064 is the beat note between the reference laser and a comb tooth at 1064 nm. f bL is the beat note between f L and the nearest comb tooth. f bT is the beat note between f T and the nearest comb tooth. f LT is the beat note between f L and f T. FNC: fiber noise cancellation; PLL: phase-lock-loop, PZT: piezoelectric transducer; PPLN-WG: periodically poled lithium niobate waveguide; AOM: acousto-optic modulator. |
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