Please use this identifier to cite or link to this item:
PIRA download icon_1.1View/Download Full Text
Title: Mode-phase-difference photothermal spectroscopy for gas detection with an anti-resonant hollow-core optical fiber
Authors: Zhao, P 
Zhao, Y 
Bao, H 
Ho, HL 
Jin, W 
Fan, S
Gao, S 
Wang, Y
Wang, P
Issue Date: 2020
Source: Nature communications, 2020, v. 11, no. 1, p. 847-
Abstract: Laser spectroscopy outperforms electrochemical and semiconductor gas sensors in selectivity and environmental survivability. However, the performance of the state-of-the-art laser sensors is still insufficient for many high precision applications. Here, we report mode-phase-difference photothermal spectroscopy with a dual-mode anti-resonant hollow-core optical fiber and demonstrate all-fiber gas (acetylene) detection down to ppt (parts-per-trillion) and <1% instability over a period of 3 hours. An anti-resonant hollow-core fiber could be designed to transmit light signals over a broad wavelength range from visible to infrared, covering molecular absorption lines of many important gases. This would enable multi-component gas detection with a single sensing element and pave the way for ultra-precision gas sensing for medical, environmental and industrial applications.
Publisher: Nature Publishing Group
Journal: Nature communications 
EISSN: 2041-1723
DOI: 10.1038/s41467-020-14707-0
Rights: © The Author(s) 2020. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
The following publication Zhao, P., Zhao, Y., Bao, H. et al. Mode-phase-difference photothermal spectroscopy for gas detection with an anti-resonant hollow-core optical fiber. Nat Commun 11, 847 (2020), is available at
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Zhao_Mode-phase-difference_photothermal.pdf1.31 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Version of Record
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

Last Week
Last month
Citations as of Jun 4, 2023


Citations as of Jun 4, 2023


Citations as of Jun 8, 2023


Last Week
Last month
Citations as of Jun 8, 2023

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.