Xiaoli Liu, Jiajia Cui, Chaofan Feng, Qingyuan Tian, Ruyue Cui, Yanting Zhao, Hongpeng Wu, Lei Dong, "Differential photoacoustic cell-based Fourier transform photoacoustic spectroscopy for background-free gas detection [Invited]," Chin. Opt. Lett. 22, 101203 (2024)
- Chinese Optics Letters
- Vol. 22, Issue 10, 101203 (2024)
Fig. 1. (a) Diagram of the FT-PAS experimental setup: FTIR, Fourier transform infrared spectrometer; BS, beam splitter mirror; RM, reversible mirror; Mic: microphone; SC source, supercontinuum source. (b) Simulation diagram of DPAC.
Fig. 2. (a) FT-PAS spectrum of 1% CH4. (b) Dependency of the FT-PAS amplitude peak on the incident light power.
Fig. 3. FT-PAS spectra of CH4 gas. (a) CH4 FT-PAS spectra of various concentrations around 3016.3 cm−1. (b) CH4 FT-PAS spectra of various concentrations around 4215.8 cm−1.
Fig. 4. (a) Emission power spectra of the tungsten halogen lamp and SC source. (b) FT-PAS spectrum of 1% C2H2.
Fig. 5. (a) Dependency of 1% C2H2 FT-PAS amplitude peak on the power. (b) C2H2 FT-PAS spectra around 6580.3 cm−1 as a function of concentration.
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20