Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79925
Title: All-fiber gas sensor with intracavity photothermal spectroscopy
Authors: Zhao, Y 
Jin, W 
Lin, YC 
Yang, F 
Ho, HL 
Issue Date: 2018
Publisher: Optical Society of America
Source: Optics letters, 1 Apr. 2018, v. 43, no. 7, p. 1566-1569 How to cite?
Journal: Optics letters 
Abstract: We present an all-fiber intracavity photothermal (IC-PT) spectroscopic gas sensor with a hollow-core photonic bandgap fiber (HC-PBF) gas cell. The gas cell is placed inside a fiber-ring laser cavity to achieve higher laser light intensity in the hollow core and hence higher PT modulation signal. An experiment with a 0.62-m-long HC-PBF gas cell demonstrated a noise equivalent concentration of 176 ppb acetylene. Theoretical modeling shows that the IC-PT sensor has the potential of achieving sub-ppb (parts-per-billion) acetylene detection sensitivity.
URI: http://hdl.handle.net/10397/79925
ISSN: 0146-9592
EISSN: 1539-4794
DOI: 10.1364/OL.43.001566
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