High index contrast photonic platforms for on-chip Raman spectroscopy

Ali Raza*, Stéphane Clemmen, Pieter Wuytens, Michiel De Goede, Amy S.K. Tong, Nicolas L.E. Thomas, Chengyu Liu, Jin Suntivich, Andre G. Skirtach, Sonia M. Garcia-Blanco, Daniel J. Blumenthal, James S. Wilkinson, Roel Baets

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
9 Downloads (Pure)

Abstract

Nanophotonic waveguide enhanced Raman spectroscopy (NWERS) is a sensing technique that uses a highly confined waveguide mode to excite and collect the Raman scattered signal from molecules in close vicinity of the waveguide. The most important parameters defining the figure of merit of an NWERS sensor include its ability to collect the Raman signal from an analyte, i.e. “the Raman conversion efficiency” and the amount of “Raman background” generated from the guiding material. Here, we compare different photonic integrated circuit (PIC) platforms capable of on-chip Raman sensing in terms of the aforementioned parameters. Among the four photonic platforms under study, tantalum oxide and silicon nitride waveguides exhibit high signal collection efficiency and low Raman background. In contrast, the performance of titania and alumina waveguides suffers from a strong Raman background and a weak signal collection efficiency, respectively.

Original languageEnglish
Pages (from-to)23067-23079
Number of pages13
JournalOptics express
Volume27
Issue number16
DOIs
Publication statusPublished - 5 Aug 2019

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platforms
Raman spectroscopy
chips
photonics
waveguides
tantalum oxides
silicon nitrides
figure of merit
nitrides
integrated circuits
aluminum oxides
titanium
sensors
molecules

Cite this

Raza, A., Clemmen, S., Wuytens, P., De Goede, M., Tong, A. S. K., Thomas, N. L. E., ... Baets, R. (2019). High index contrast photonic platforms for on-chip Raman spectroscopy. Optics express, 27(16), 23067-23079. https://doi.org/10.1364/OE.27.023067
Raza, Ali ; Clemmen, Stéphane ; Wuytens, Pieter ; De Goede, Michiel ; Tong, Amy S.K. ; Thomas, Nicolas L.E. ; Liu, Chengyu ; Suntivich, Jin ; Skirtach, Andre G. ; Garcia-Blanco, Sonia M. ; Blumenthal, Daniel J. ; Wilkinson, James S. ; Baets, Roel. / High index contrast photonic platforms for on-chip Raman spectroscopy. In: Optics express. 2019 ; Vol. 27, No. 16. pp. 23067-23079.
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Raza, A, Clemmen, S, Wuytens, P, De Goede, M, Tong, ASK, Thomas, NLE, Liu, C, Suntivich, J, Skirtach, AG, Garcia-Blanco, SM, Blumenthal, DJ, Wilkinson, JS & Baets, R 2019, 'High index contrast photonic platforms for on-chip Raman spectroscopy', Optics express, vol. 27, no. 16, pp. 23067-23079. https://doi.org/10.1364/OE.27.023067

High index contrast photonic platforms for on-chip Raman spectroscopy. / Raza, Ali; Clemmen, Stéphane; Wuytens, Pieter; De Goede, Michiel; Tong, Amy S.K.; Thomas, Nicolas L.E.; Liu, Chengyu; Suntivich, Jin; Skirtach, Andre G.; Garcia-Blanco, Sonia M.; Blumenthal, Daniel J.; Wilkinson, James S.; Baets, Roel.

In: Optics express, Vol. 27, No. 16, 05.08.2019, p. 23067-23079.

Research output: Contribution to journalArticleAcademicpeer-review

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Raza A, Clemmen S, Wuytens P, De Goede M, Tong ASK, Thomas NLE et al. High index contrast photonic platforms for on-chip Raman spectroscopy. Optics express. 2019 Aug 5;27(16):23067-23079. https://doi.org/10.1364/OE.27.023067