典型文献
Sub-femtometer-resolution absolute spectroscopy with sweeping electro-optic combs
文献摘要：
Optical frequency comb with evenly spaced lines over a broad bandwidth has revolutionized the fields of optical metro-logy and spectroscopy. Here, we propose a fast interleaved dual-comb spectroscopy with sub-femtometer-resolution and absolute frequency, in which two electro-optic frequency combs are swept. Electrically-modulated stabilized laser en-ables ultrahigh resolution of 0.16 fm (or 20 kHz in optical frequency) and single-shot measurement in 90 ms. Total 20 mil-lion points are recorded spanning 3.2 nm (or 400 GHz) bandwidth, corresponding to a spectral sampling rate of 2.5 × 108 points/s under Nyquist-limitation. Besides, considering the trade-off between the measurement time and spectral resolu-tion, a fast single-shot measurement is also realized in 1.6 ms with 8 fm (or 1 MHz) resolution. We demonstrate the 25-averaged result with 30.6 dB spectral measurement signal-to-noise ratio (SNR) by reducing the filter bandwidth in de-modulation. The results show great prospect for precise measurement with flexibly fast refresh time, high spectral resolu-tion, and high SNR.
文献关键词：
中图分类号：
作者姓名：
Bingxin Xu;Xinyu Fan;Shuai Wang;Zuyuan He
作者机构：
State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China.
文献出处：
引用格式：
[1]Bingxin Xu;Xinyu Fan;Shuai Wang;Zuyuan He-.Sub-femtometer-resolution absolute spectroscopy with sweeping electro-optic combs)[J].光电进展（英文版）,2022(12):35-43
A类：
femtometer
B类：
Sub,resolution,absolute,spectroscopy,sweeping,electro,combs,Optical,frequency,evenly,spaced,lines,over,broad,bandwidth,has,revolutionized,fields,optical,metro,logy,Here,propose,fast,interleaved,dual,sub,which,two,are,swept,Electrically,modulated,stabilized,laser,ables,ultrahigh,fm,kHz,single,shot,measurement,ms,Total,mil,lion,points,recorded,spanning,GHz,corresponding,spectral,sampling,under,Nyquist,limitation,Besides,considering,trade,off,between,also,realized,MHz,We,demonstrate,averaged,dB,signal,noise,ratio,SNR,by,reducing,filter,modulation,results,show,great,prospect,precise,flexibly,refresh
AB值：
0.569405
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