TY - JOUR
T1 - Dual-comb photothermal spectroscopy
AU - Wang, Qiang
AU - Wang, Zhen
AU - ZHANG Hui, null
AU - Jiang, Shoulin
AU - YINGYING, WANG
AU - Jin, Wei
AU - REN, WEI
N1 - Funding Information:
This research was supported by the National Natural Science Foundation of China (NSFC) (62005267, Q.W.; 51776179, W.R.), Strategic Priority Research Program of Chinese Academy of Sciences (XDA17040513, XDA22020502, Q,W.), General Research Fund (14209220, W.R.) from the University Grants Committee, Innovation and Technology Fund (MHP/049/19, GHP/123/19GD, W.R.) from the Innovation and Technology Commission, Scientific Instrument Developing Project of the Chinese Academy of Sciences (YJKYYQ20190037, Q.W.), the Second Comprehensive Scientific Investigation of the Qinghai-Tibet Plateau (2019QZKK020802, Q.W.).
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Dual-comb spectroscopy (DCS) has revolutionized optical spectroscopy by providing broadband spectral measurements with unprecedented resolution and fast response. Photothermal spectroscopy (PTS) with a pump-probe configuration offers a highly sensitive gas sensing method, which is normally performed using a single-wavelength pump laser. The merging of PTS with DCS may enable a spectroscopic method by taking advantage of both technologies, which has never been studied yet. Here, we report dual-comb photothermal spectroscopy (DC-PTS) by passing dual combs and a probe laser through a gas-filled anti-resonant hollow-core fiber, where the generated multi-heterodyne modulation of the refractive index is sensitively detected by an in-line interferometer. As an example, we have measured photothermal spectra of acetylene over 1 THz, showing a good agreement with the spectral database. Our proposed DC-PTS provides opportunities for broadband gas sensing with super-fine resolution and high sensitivity, as well as with a small sample volume and compact configuration.
AB - Dual-comb spectroscopy (DCS) has revolutionized optical spectroscopy by providing broadband spectral measurements with unprecedented resolution and fast response. Photothermal spectroscopy (PTS) with a pump-probe configuration offers a highly sensitive gas sensing method, which is normally performed using a single-wavelength pump laser. The merging of PTS with DCS may enable a spectroscopic method by taking advantage of both technologies, which has never been studied yet. Here, we report dual-comb photothermal spectroscopy (DC-PTS) by passing dual combs and a probe laser through a gas-filled anti-resonant hollow-core fiber, where the generated multi-heterodyne modulation of the refractive index is sensitively detected by an in-line interferometer. As an example, we have measured photothermal spectra of acetylene over 1 THz, showing a good agreement with the spectral database. Our proposed DC-PTS provides opportunities for broadband gas sensing with super-fine resolution and high sensitivity, as well as with a small sample volume and compact configuration.
UR - https://www.scopus.com/pages/publications/85128634264
U2 - 10.1038/s41467-022-29865-6
DO - 10.1038/s41467-022-29865-6
M3 - Journal article
SN - 2041-1723
VL - 13
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2181
ER -