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Gas detection using...
Gas detection using cavity-enhanced Raman spectroscopy with a bidirectional multi-pass cell and polarization beam-splitting optical path
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- Zheng, Yuhao (författare)
- Zhejiang Univ, Coll Opt Sci & Engn, Natl Engn Res Ctr Opt Instruments, Ctr Opt & Electromagnet Res,Zhejiang Prov Key Lab, Hangzhou 310058, Peoples R China.
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- Zou, Xiaer (författare)
- Zhejiang Univ, Coll Opt Sci & Engn, Natl Engn Res Ctr Opt Instruments, Ctr Opt & Electromagnet Res,Zhejiang Prov Key Lab, Hangzhou 310058, Peoples R China.
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- He, Sailing (författare)
- KTH,Optical Network Laboratory (ON Lab),Zhejiang-KTH Joint Research Center of Photonics, JORCEP,Elektromagnetism och fusionsfysik,Zhejiang Univ, Coll Opt Sci & Engn, Natl Engn Res Ctr Opt Instruments, Ctr Opt & Electromagnet Res,Zhejiang Prov Key Lab, Hangzhou 310058, Peoples R China.;KTH Royal Inst Technol, Sch Elect Engn, Dept Electromagnet Engn, SE-10044 Stockholm, Sweden.
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Zhejiang Univ, Coll Opt Sci & Engn, Natl Engn Res Ctr Opt Instruments, Ctr Opt & Electromagnet Res,Zhejiang Prov Key Lab, Hangzhou 310058, Peoples R China Optical Network Laboratory (ON Lab) (creator_code:org_t)
- Springer Nature, 2024
- 2024
- Engelska.
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Ingår i: Applied physics. B, Lasers and optics (Print). - : Springer Nature. - 0946-2171 .- 1432-0649. ; 130:8
- Relaterad länk:
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We demonstrate a substantial enhancement of gas Raman scattering using a bidirectional multi-pass cavity CERS system, which incorporates a polarization beam-splitting optical path. The system design allows the laser light to traverse the multi-pass cavity for four specific trips, satisfying the need for quick detection of various gas components. Our gas detection experiments using multi-pass cavities with different times of reflection indicate that the addition of polarization beam-splitting optical path gives 1.5 to 1.68 times enhancement of Raman signal compared with that of the system without polarization beam-splitting. For the detection of CH4, a limit of detection of 1.66 ppm was achieved with our system using a multi-pass cell with 41 times of reflection and an integration time of 30s. Our proposed design, which integrates a bidirectional multi-pass cavity with polarization beam-splitting optical path, gives an economical multicomponent gas detection system and a valuable tool for guiding the design and precise alignment of these cavities. This system shows significant promise for applications in e.g. human breath and environmental monitoring.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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