Quantum-Noise-Limited Optical Frequency Comb Spectroscopy

被引：139
|
作者：
Foltynowicz, Aleksandra [1 ]
Ban, Ticijana [3 ]
Maslowski, Piotr [2 ]
Adler, Florian
Ye, Jun
机构：
[1] Natl Inst Stand & Technol, JILA, Boulder, CO 80309 USA
[2] Uniwersytet Mikolaja Kopernika, Inst Fizyki, Torun, Poland
[3] Univ Zagreb, Inst Phys, Zagreb, Croatia
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 23期
基金：
瑞典研究理事会; 美国国家科学基金会;
关键词：
FOURIER-TRANSFORM SPECTROSCOPY; STABILIZATION;
D O I：
10.1103/PhysRevLett.107.233002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We achieve a quantum-noise-limited absorption sensitivity of 1.7 x 10(-12) cm(-1) per spectral element at 400 s of acquisition time with cavity-enhanced frequency comb spectroscopy, the highest demonstrated for a comb-based technique. The system comprises a frequency comb locked to a high-finesse cavity and a fast-scanning Fourier transform spectrometer with an ultralow-noise autobalancing detector. Spectra with a signal-to-noise ratio above 1000 and a resolution of 380 MHz are acquired within a few seconds. The measured absorption line shapes are in excellent agreement with theoretical predictions.
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页数：5
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