Frequency metrology of molecules in the near-infrared by NICE-OHMS

被引：15

作者：

Hua, T-P ^{[1
]}

Sun, Y. R. ^{[1
,2
]}

Wang, J. ^{[1
]}

Liu, A-W ^{[1
,2
]}

Hu, S-M ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, iChem Ctr, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phy, Hefei 230026, Anhui, Peoples R China

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 05期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

NU(1)+3-NU(3) ABSORPTION-BAND; MU-M; MODULATION SPECTROSCOPY; LASER SPECTROSCOPY; CAVITY; OVERTONE; (C2H2)-C-12; LINES; STABILIZATION; TRANSITION;

D O I：

10.1364/OE.27.006106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Noise-immune cavity enhanced optical heterodyne molecular spectroscopy (NICE-OHMS) is extremely sensitive in detecting weak absorption. However, the use of NICE-OHMS for metrology study was also hindered by its sensitivity to influence from various experimental conditions such as the residual amplitude modulation. Here we demonstrate to use NICE-OHMS for precision measurements of Lamb-dip spectra of molecules. After a dedicated investigation of the systematic uncertainties in the NICE-OHMS measurement, the transition frequency of a ro-vibrational line of C2H2 near 789 nm was determined to be 379 639 280 915.3 +/- 1.2 kHz (fractional uncertainty 3.2 x 10(12)), agreeing well with, but more accurate than, the value determined from previous cavity ring-down spectroscopy measurements. The study indicates the possibility to implement the very sensitive NICE-OHMS method for frequency metrology of molecules, or a molecular clock, in the near-infrared. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：6106 / 6115

页数：10

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