Integrated waveguide and nanostructured sensor platform for surface-enhanced Raman spectroscopy

Stuart J. Pearce; Michael E. Pollard; SweZin Oo; Ruiqi Y. Chen; Sumit Kalsi; Martin D.  B. Charlton

doi:10.1117/1.JNP.8.083989

11 April 2014 Integrated waveguide and nanostructured sensor platform for surface-enhanced Raman spectroscopy

Stuart J. Pearce, Michael E. Pollard, SweZin Oo, Ruiqi Y. Chen, Sumit Kalsi, Martin D. B. Charlton

Author Affiliations +

Journal of Nanophotonics, Vol. 8, Issue 1, 083989 (April 2014). https://doi.org/10.1117/1.JNP.8.083989

Abstract

Limitations of current sensors include large dimensions, sometimes limited sensitivity and inherent single-parameter measurement capability. Surface-enhanced Raman spectroscopy can be utilized for environment and pharmaceutical applications with the intensity of the Raman scattering enhanced by a factor of 10⁶. By fabricating and characterizing an integrated optical waveguide beneath a nanostructured precious metal coated surface a new surface-enhanced Raman spectroscopy sensing arrangement can be achieved. Nanostructured sensors can provide both multiparameter and high-resolution sensing. Using the slab waveguide core to interrogate the nanostructures at the base allows for the emission to reach discrete sensing areas effectively and should provide ideal parameters for maximum Raman interactions. Thin slab waveguide films of silicon oxynitride were etched and gold coated to create localized nanostructured sensing areas of various pitch, diameter, and shape. These were interrogated using a Ti:Sapphire laser tuned to 785-nm end coupled into the slab waveguide. The nanostructured sensors vertically projected a Raman signal, which was used to actively detect a thin layer of benzyl mercaptan attached to the sensors.

Citation Download Citation

Stuart J. Pearce, Michael E. Pollard, SweZin Oo, Ruiqi Y. Chen, Sumit Kalsi, and Martin D. B. Charlton "Integrated waveguide and nanostructured sensor platform for surface-enhanced Raman spectroscopy," Journal of Nanophotonics 8(1), 083989 (11 April 2014). https://doi.org/10.1117/1.JNP.8.083989

Published: 11 April 2014

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available