Adaptive-sampling near-Doppler-limited terahertz dual-comb spectroscopy with a free-running single-cavity fiber laser

被引：0

作者：

Jie Chen ^{[1
,2
]}

Kazuki Nitta ^{[2
,3
]}

Xin Zhao ^{[1
]}

Takahiko Mizuno ^{[3
,4
,5
]}

Takeo Minamikawa ^{[3
,4
,5
,6
]}

Francis Hindle ^{[7
]}

Zheng Zheng ^{[1
,8
]}

Takeshi Yasui ^{[3
,4
,5
,6
]}

机构：

[1] Beihang University,School of Electronic and Information Engineering

[2] Tokushima University,Graduate School of Advanced Technology and Science

[3] JST,ERATO MINOSHIMA Intelligent Optical Synthesizer

[4] Tokushima University,Institute of Post-LED Photonics

[5] Tokushima University,Graduate School of Technology,Industrial and Social Sciences

[6] Tokushima University,Research Cluster on “Multi-scale Vibrational Microscopy for Comprehensive Diagnosis and Treatment of Cancer”

[7] Université du Littoral C?te d'Opale,Laboratoire de Physico-Chimie de l'Atmosphère

[8] Beihang University,Beijing Advanced Innovation Center for Big Data-based Precision Medicine

来源：

Advanced Photonics | 2020年 / 03期

关键词：

D O I：

暂无

中图分类号：

TN248 [激光器];

学科分类号：

0803 ; 080401 ; 080901 ;

摘要：

Dual-comb spectroscopy(DCS) is an emerging spectroscopic tool with the potential to simultaneously achieve a broad spectral coverage and ultrahigh spectral resolution with rapid data acquisition.However,the need for two independently stabilized ultrafast lasers significantly hampers the potential application of DCS.We demonstrate mode-resolved DCS in the THz region based on a free-running single-cavity dual-comb fiber laser with the adaptive sampling method.While the use of a free-running single-cavity dual-comb fiber laser eliminates the need for two mode-locked lasers and their frequency control,the adaptive sampling method strongly prevents the degradation of spectroscopic performance caused by the residual timing jitter in the free-running dual-comb laser.Doppler-limit-approaching absorption features with linewidths down to 25 MHz are investigated for low-pressure acetonitrile/air mixed gas by comb-mode-resolved THz spectroscopy.The successful demonstration clearly indicates its great potential for the realization of lowcomplexity,Doppler-limited THz spectroscopy instrumentation.

引用

页码：53 / 63

页数：11

共 49 条

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