Multiple surface gratings on azopolymers for generating surface plasmons

Paul Rochon; Luc Levesque

doi:10.1117/12.707984

8 September 2006 Multiple surface gratings on azopolymers for generating surface plasmons

Paul Rochon, Luc Levesque

Proceedings Volume 6343, Photonics North 2006; 634338 (2006) https://doi.org/10.1117/12.707984
Event: Photonics North 2006, 2006, Quebec City, Canada

Abstract

Surface relief gratings are optically inscribed on azobenzene polymer films. Multiple gratings can be inscribed on the same spot either simultaneously or sequentially by projecting a holographic pattern onto the surface. The grating pitch can range from 350 nm to 1.5 μm and depths can easily reach 400 nm. The inscription is done at room temperature, in air using a 100 mW/cm² beam for 1 to 5 minutes. In the present study we inscribe two sinusoidal gratings and coat the surface with a 20 nm thin film of gold. Light incident onto this structured surface is coupled into a surface plasmon when the appropriate angle of incidence and wavelength are selected. The coupling condition can be observed in the reflection spectrum from the surface. A dispersion curve for the plasmon propagation can then be produced by studying the reflection spectrum as a function of the angle of incidence. By using two gratings as couplers, a surface plasmon standing wave can be produced for a selected incident light wavelength.

Citation Download Citation

Paul Rochon and Luc Levesque "Multiple surface gratings on azopolymers for generating surface plasmons", Proc. SPIE 6343, Photonics North 2006, 634338 (8 September 2006); https://doi.org/10.1117/12.707984

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