Label-free particle sensing by fiber taper-based Raman spectroscopy

Perry S. Edwards; Corey T. Janisch; Bo Peng; Jiangang Zhu; Sahin K. Ozdemir; Lan Yang; Zhiwen Liu

doi:10.1109/LPT.2014.2347970

Label-free particle sensing by fiber taper-based Raman spectroscopy

Perry S. Edwards, Corey T. Janisch, Bo Peng, Jiangang Zhu, Sahin K. Ozdemir, Lan Yang, Zhiwen Liu

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A fiber taper-based method for label-free Raman sensing is presented, which exploits the interaction between adsorbed specimen and the exposed evanescence tail of guided pump light. Chemical specificity and detection of microsphere specimens with diameters as small as 1 μ m are shown. To improve the sensitivity, we further propose resonator-enhanced Raman spectroscopy by taking advantage of the power build-up of a resonant mode in a cavity. Proof of concept is demonstrated by incorporating a fiber taper within a fiber ring resonator and locking a tunable laser to a circulating resonant mode. This demonstration shows a modest 40% enhancement of the Raman signal.

Original language	English (US)
Article number	6883158
Pages (from-to)	2093-2096
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	26
Issue number	20
DOIs	https://doi.org/10.1109/LPT.2014.2347970
State	Published - Oct 15 2014

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2014.2347970

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title = "Label-free particle sensing by fiber taper-based Raman spectroscopy",

abstract = "A fiber taper-based method for label-free Raman sensing is presented, which exploits the interaction between adsorbed specimen and the exposed evanescence tail of guided pump light. Chemical specificity and detection of microsphere specimens with diameters as small as 1 μ m are shown. To improve the sensitivity, we further propose resonator-enhanced Raman spectroscopy by taking advantage of the power build-up of a resonant mode in a cavity. Proof of concept is demonstrated by incorporating a fiber taper within a fiber ring resonator and locking a tunable laser to a circulating resonant mode. This demonstration shows a modest 40% enhancement of the Raman signal.",

author = "Edwards, {Perry S.} and Janisch, {Corey T.} and Bo Peng and Jiangang Zhu and Ozdemir, {Sahin K.} and Lan Yang and Zhiwen Liu",

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AU - Edwards, Perry S.

AU - Janisch, Corey T.

AU - Peng, Bo

AU - Zhu, Jiangang

AU - Ozdemir, Sahin K.

AU - Yang, Lan

AU - Liu, Zhiwen

PY - 2014/10/15

Y1 - 2014/10/15

N2 - A fiber taper-based method for label-free Raman sensing is presented, which exploits the interaction between adsorbed specimen and the exposed evanescence tail of guided pump light. Chemical specificity and detection of microsphere specimens with diameters as small as 1 μ m are shown. To improve the sensitivity, we further propose resonator-enhanced Raman spectroscopy by taking advantage of the power build-up of a resonant mode in a cavity. Proof of concept is demonstrated by incorporating a fiber taper within a fiber ring resonator and locking a tunable laser to a circulating resonant mode. This demonstration shows a modest 40% enhancement of the Raman signal.

AB - A fiber taper-based method for label-free Raman sensing is presented, which exploits the interaction between adsorbed specimen and the exposed evanescence tail of guided pump light. Chemical specificity and detection of microsphere specimens with diameters as small as 1 μ m are shown. To improve the sensitivity, we further propose resonator-enhanced Raman spectroscopy by taking advantage of the power build-up of a resonant mode in a cavity. Proof of concept is demonstrated by incorporating a fiber taper within a fiber ring resonator and locking a tunable laser to a circulating resonant mode. This demonstration shows a modest 40% enhancement of the Raman signal.

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Label-free particle sensing by fiber taper-based Raman spectroscopy

Abstract

All Science Journal Classification (ASJC) codes

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