Dual-comb spectroscopy over a 100 km open-air path

被引：0

作者：

Han, Jin-Jian ^{[1
,2
,3
,4
,5
]}

Zhong, Wei ^{[6
]}

Zhao, Ruo-Can ^{[6
]}

Zeng, Ting ^{[1
,2
,3
,4
,5
]}

Li, Min ^{[1
,2
,3
,4
,5
]}

Lu, Jian ^{[1
,2
,3
,4
,5
]}

Peng, Xin-Xin ^{[1
,2
,3
,4
,5
]}

Shi, Xi-Ping ^{[7
]}

Yin, Qin ^{[6
]}

Wang, Yong ^{[8
]}

Esamdin, Ali ^{[8
]}

Shen, Qi ^{[1
,2
,3
,4
,5
]}

Guan, Jian-Yu ^{[1
,2
,3
,4
,5
]}

Hou, Lei ^{[1
,2
,3
,4
,5
]}

Ren, Ji-Gang ^{[1
,2
,3
,4
,5
]}

Jia, Jian-Jun ^{[5
,9
]}

Wang, Yu ^{[5
,6
,10
]}

Jiang, Hai-Feng ^{[1
,2
,3
,4
,5
]}

Xue, Xiang-Hui ^{[1
,2
,5
,6
,10
]}

Zhang, Qiang ^{[1
,2
,3
,4
,5
,9
]}

Dou, Xian-Kang ^{[5
]}

Pan, Jian-Wei ^{[1
,2
,3
,4
,5
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Hefei, Peoples R China

[2] Univ Sci & Technol China, Sch Phys Sci, Hefei, Peoples R China

[3] Univ Sci & Technol China, Shanghai Res Ctr Quantum Sci, Shanghai, Peoples R China

[4] Univ Sci & Technol China, Ctr Excellence Quantum Informat & Quantum Phys, CAS, Shanghai, Peoples R China

[5] Univ Sci & Technol China, Hefei Natl Lab, Hefei, Peoples R China

[6] Univ Sci & Technol China, Sch Earth & Space Sci, Key Lab Geospace Environm, CAS, Hefei, Peoples R China

[7] Ningbo Univ, Fac Informat Sci & Engn, Ningbo, Peoples R China

[8] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Peoples R China

[9] Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai, Peoples R China

[10] Univ Sci & Technol China, Anhui Mengcheng Geophys Natl Observat & Res Stn, Hefei, Peoples R China

来源：

NATURE PHOTONICS | 2024年 / 18卷 / 11期

基金：

中国国家自然科学基金;

关键词：

SATELLITE; TIME; CO2; LINK; CH4;

D O I：

10.1038/s41566-024-01525-9

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dual-comb spectroscopy (DCS) provides broadband, high-resolution, high-sensitivity amplitude and phase spectra within a short measurement time, thus holding promises for atmospheric spectroscopy. However, previous research has been limited to measuring over open-air paths of about 20 km. Here, by developing a bistatic set-up using time-frequency dissemination and high-power optical frequency combs, we implement DCS over a 113 km turbulent horizontal open-air path. We successfully measure the absorbance spectra of CO2 and H2O with a 7 nm spectral bandwidth and a 10 kHz frequency accuracy, and achieve a sensing precision of <2 ppm in 5 min and <0.6 ppm in 36 min for CO2. We anticipate our system to find immediate applications in the monitoring of urban greenhouse gas and gaseous pollutants emission. Our technology may also be extended to satellite-based DCS for greenhouse gas monitoring and calibration measurements.

引用

页码：1195 / 1202

页数：15

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