Using a Fabry-Perot Cavity to Augment the Enhancement Factor for Surface-Enhanced Raman Spectroscopy and Tip-Enhanced Raman Spectroscopy

Yinsheng Guo; Song Jiang; Xu Chen; Michael Mattei; Jon A. Dieringer; John P. Ciraldo; Richard P. Van Duyne

doi:10.1021/acs.jpcc.8b05253

Using a Fabry-Perot Cavity to Augment the Enhancement Factor for Surface-Enhanced Raman Spectroscopy and Tip-Enhanced Raman Spectroscopy

Yinsheng Guo, Song Jiang, Xu Chen, Michael Mattei, Jon A. Dieringer, John P. Ciraldo, Richard P. Van Duyne^*

^*Corresponding author for this work

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

23 Scopus citations

Abstract

We propose the use of Fabry-Perot cavities as a means to augment the enhancement factor in surface-enhanced Raman spectroscopy (SERS) and tip-enhanced Raman spectroscopy (TERS) experiments by optical interference. Using both clean-room and bench-top fabrication approaches, we demonstrate that such a design can be readily realized and provides an additional 12× SERS enhancement and 5× TERS enhancement, in good agreement with expectations from electromagnetic modeling. The mechanism of optical interference enhancement is of far-field nature and is independent of the enhancement mechanisms relying on plasmonic and molecular resonances. Therefore, the Fabry-Perot cavity substrate can be applied generally without material and molecular limitations. The Fabry-Perot cavity structure provides enhancement at large incidence angles away from the surface normal, particularly suitable for low-light Raman measurements with side illumination.

Original language	English (US)
Pages (from-to)	14865-14871
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	122
Issue number	26
DOIs	https://doi.org/10.1021/acs.jpcc.8b05253
State	Published - Jul 5 2018

Funding

We thank Steven J. Byrnes for helpful discussions. Y.G. and R.P.V.D. acknowledge support from the Department of Defense Vannevar Bush Faculty Fellowship program (N00014-17-1-3024) and the National Science Foundation Center for Chemical Innovation dedicated to Chemistry at the Space-Time Limit (CaSTL) Grant CHE-1414466. S.J., X.C., and M.M. acknowledge support from the Air Force Office of Scientific Research MURI (FA9550-14-1-0003). This work utilized the Northwestern University Micro/Nano Fabrication Facility (NUFAB), which is partially supported by Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the Materials Research Science and Engineering Center (DMR-1720139), the State of Illinois, and the Northwestern University.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/acs.jpcc.8b05253

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title = "Using a Fabry-Perot Cavity to Augment the Enhancement Factor for Surface-Enhanced Raman Spectroscopy and Tip-Enhanced Raman Spectroscopy",

abstract = "We propose the use of Fabry-Perot cavities as a means to augment the enhancement factor in surface-enhanced Raman spectroscopy (SERS) and tip-enhanced Raman spectroscopy (TERS) experiments by optical interference. Using both clean-room and bench-top fabrication approaches, we demonstrate that such a design can be readily realized and provides an additional 12× SERS enhancement and 5× TERS enhancement, in good agreement with expectations from electromagnetic modeling. The mechanism of optical interference enhancement is of far-field nature and is independent of the enhancement mechanisms relying on plasmonic and molecular resonances. Therefore, the Fabry-Perot cavity substrate can be applied generally without material and molecular limitations. The Fabry-Perot cavity structure provides enhancement at large incidence angles away from the surface normal, particularly suitable for low-light Raman measurements with side illumination.",

author = "Yinsheng Guo and Song Jiang and Xu Chen and Michael Mattei and Dieringer, {Jon A.} and Ciraldo, {John P.} and {Van Duyne}, {Richard P.}",

note = "Funding Information: We thank Steven J. Byrnes for helpful discussions. Y.G. and R.P.V.D. acknowledge support from the Department of Defense Vannevar Bush Faculty Fellowship program (N00014-17-1-3024) and the National Science Foundation Center for Chemical Innovation dedicated to Chemistry at the Space-Time Limit (CaSTL) Grant CHE-1414466. S.J., X.C., and M.M. acknowledge support from the Air Force Office of Scientific Research MURI (FA9550-14-1-0003). This work utilized the Northwestern University Micro/Nano Fabrication Facility (NUFAB), which is partially supported by Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the Materials Research Science and Engineering Center (DMR-1720139), the State of Illinois, and the Northwestern University. Publisher Copyright: {\textcopyright} Copyright 2018 American Chemical Society.",

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AU - Ciraldo, John P.

AU - Van Duyne, Richard P.

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N2 - We propose the use of Fabry-Perot cavities as a means to augment the enhancement factor in surface-enhanced Raman spectroscopy (SERS) and tip-enhanced Raman spectroscopy (TERS) experiments by optical interference. Using both clean-room and bench-top fabrication approaches, we demonstrate that such a design can be readily realized and provides an additional 12× SERS enhancement and 5× TERS enhancement, in good agreement with expectations from electromagnetic modeling. The mechanism of optical interference enhancement is of far-field nature and is independent of the enhancement mechanisms relying on plasmonic and molecular resonances. Therefore, the Fabry-Perot cavity substrate can be applied generally without material and molecular limitations. The Fabry-Perot cavity structure provides enhancement at large incidence angles away from the surface normal, particularly suitable for low-light Raman measurements with side illumination.

AB - We propose the use of Fabry-Perot cavities as a means to augment the enhancement factor in surface-enhanced Raman spectroscopy (SERS) and tip-enhanced Raman spectroscopy (TERS) experiments by optical interference. Using both clean-room and bench-top fabrication approaches, we demonstrate that such a design can be readily realized and provides an additional 12× SERS enhancement and 5× TERS enhancement, in good agreement with expectations from electromagnetic modeling. The mechanism of optical interference enhancement is of far-field nature and is independent of the enhancement mechanisms relying on plasmonic and molecular resonances. Therefore, the Fabry-Perot cavity substrate can be applied generally without material and molecular limitations. The Fabry-Perot cavity structure provides enhancement at large incidence angles away from the surface normal, particularly suitable for low-light Raman measurements with side illumination.

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Using a Fabry-Perot Cavity to Augment the Enhancement Factor for Surface-Enhanced Raman Spectroscopy and Tip-Enhanced Raman Spectroscopy

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