Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber
Fast detection and identification of chemicals are of utmost importance for field testing and real-time monitoring in many fields. Raman spectroscopy is the predominant technique in principle, but its wide application is limited on account of weak scattering efficiency. Surface Enhanced Raman Spectr...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/106807 http://hdl.handle.net/10220/49653 http://dx.doi.org/10.1364/OE.27.010370 |
| _version_ | 1811697472417824768 |
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| author | Chu, Qian Jin, Zhiqiang Yu, Xingtao Li, Caoxin Zhang, Weihua Ji, Wenbing Lin, Bo Shum, Perry Ping Zhang, Xuping Wang, Guanghui |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Chu, Qian Jin, Zhiqiang Yu, Xingtao Li, Caoxin Zhang, Weihua Ji, Wenbing Lin, Bo Shum, Perry Ping Zhang, Xuping Wang, Guanghui |
| author_sort | Chu, Qian |
| collection | NTU |
| description | Fast detection and identification of chemicals are of utmost importance for field testing and real-time monitoring in many fields. Raman spectroscopy is the predominant technique in principle, but its wide application is limited on account of weak scattering efficiency. Surface Enhanced Raman Spectroscopy (SERS) technique provides a solution for signal enhancement, but may not good at fast detection due to cross contamination and bulky instruments. Hollow-core fiber-based Raman cell with long interaction length can achieve high detection sensitivity, but it also suffers from low flow rate, bulky high-pressure equipment and light coupling structure, which also restricts its application for fast detection. In order to solve those problems, we proposed a portable Raman cell, by using metal-lined hollow-core fibers (MLHCF) with large bandwidth, good field confinement, extremely large numerical aperture and arbitrary length. With our proposed fiber inserted light coupling and light reflecting method, a Raman cell of 3.1 cm in length provides nearly 50 times of signal enhancement compared with direct detection using bare fiber tip. Furthermore, the sample exchange rate could be as fast as 1 second even under normal pressure without any cross contamination. At last, we also demonstrated the underlying general mechanism of signal enhancement and summarized it as volumetric enhancement of Raman scattering (VERS). Both the experiment results and the theoretical analysis demonstrated that our device has the potential for fast online Raman detection, which also possesses high-sensitivity and high-accuracy. |
| first_indexed | 2024-10-01T07:55:48Z |
| format | Journal Article |
| id | ntu-10356/106807 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:55:48Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/1068072019-12-06T22:18:46Z Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber Chu, Qian Jin, Zhiqiang Yu, Xingtao Li, Caoxin Zhang, Weihua Ji, Wenbing Lin, Bo Shum, Perry Ping Zhang, Xuping Wang, Guanghui School of Electrical and Electronic Engineering Surface Enhanced Raman Spectroscopy Raman Scattering Engineering::Electrical and electronic engineering Fast detection and identification of chemicals are of utmost importance for field testing and real-time monitoring in many fields. Raman spectroscopy is the predominant technique in principle, but its wide application is limited on account of weak scattering efficiency. Surface Enhanced Raman Spectroscopy (SERS) technique provides a solution for signal enhancement, but may not good at fast detection due to cross contamination and bulky instruments. Hollow-core fiber-based Raman cell with long interaction length can achieve high detection sensitivity, but it also suffers from low flow rate, bulky high-pressure equipment and light coupling structure, which also restricts its application for fast detection. In order to solve those problems, we proposed a portable Raman cell, by using metal-lined hollow-core fibers (MLHCF) with large bandwidth, good field confinement, extremely large numerical aperture and arbitrary length. With our proposed fiber inserted light coupling and light reflecting method, a Raman cell of 3.1 cm in length provides nearly 50 times of signal enhancement compared with direct detection using bare fiber tip. Furthermore, the sample exchange rate could be as fast as 1 second even under normal pressure without any cross contamination. At last, we also demonstrated the underlying general mechanism of signal enhancement and summarized it as volumetric enhancement of Raman scattering (VERS). Both the experiment results and the theoretical analysis demonstrated that our device has the potential for fast online Raman detection, which also possesses high-sensitivity and high-accuracy. Published version 2019-08-15T06:10:40Z 2019-12-06T22:18:46Z 2019-08-15T06:10:40Z 2019-12-06T22:18:46Z 2019 Journal Article Chu, Q., Jin, Z., Yu, X., Li, C., Zhang, W., Ji, W., . . . Wang, G. (2019). Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber. Optics Express, 27(7), 10370-10382. doi:10.1364/OE.27.010370 1094-4087 https://hdl.handle.net/10356/106807 http://hdl.handle.net/10220/49653 http://dx.doi.org/10.1364/OE.27.010370 en Optics Express © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. 13 p. application/pdf |
| spellingShingle | Surface Enhanced Raman Spectroscopy Raman Scattering Engineering::Electrical and electronic engineering Chu, Qian Jin, Zhiqiang Yu, Xingtao Li, Caoxin Zhang, Weihua Ji, Wenbing Lin, Bo Shum, Perry Ping Zhang, Xuping Wang, Guanghui Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber |
| title | Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber |
| title_full | Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber |
| title_fullStr | Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber |
| title_full_unstemmed | Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber |
| title_short | Volumetric enhancement of Raman scattering for fast detection based on a silver-lined hollow-core fiber |
| title_sort | volumetric enhancement of raman scattering for fast detection based on a silver lined hollow core fiber |
| topic | Surface Enhanced Raman Spectroscopy Raman Scattering Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/106807 http://hdl.handle.net/10220/49653 http://dx.doi.org/10.1364/OE.27.010370 |
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