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Proceedings Paper

Manipulation of surface plasmons on a vertical cavity surface emitting laser platform
Author(s): B. Corbett; J.-M. Lamy; J. Justice; G. Lévêque
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Paper Abstract

The use of structured metal films where electromagnetic waves are confined and manipulated as surface plasmon polaritons (SPPs) has potential use in applications ranging from biosensing, chip-to-chip optical interconnects and in data storage. In general, the SPPs are excited using a separate light source which compromises the compactness of any system. As a solution the SPPs can be directly excited on a layer of gold which is deposited on the top surface of a Vertical Cavity Surface Emitting Laser. Here, we have designed the surface of the VCSEL to include a customised planar gold layer upon which we can excite, propagate and manipulate SPPs over distances of up to 100 microns. We launch the SPPs using a low threshold 850 nm emitting VCSEL under continuous wave operation using a diffraction grating etched through the gold surface. Shallow etched gratings are used to manipulate the SPPs through, for example, a 90° bend using a Bragg mirror and to out-couple the SPPs into air where the polarization dependent relative intensity of the extracted light is measured using a CCD camera. We measure a SPP propagation length of about 50 microns. The result paves the way to compact integrated plasmonic devices.

Paper Details

Date Published: 10 May 2010
PDF: 6 pages
Proc. SPIE 7712, Nanophotonics III, 771213 (10 May 2010); doi: 10.1117/12.854056
Show Author Affiliations
B. Corbett, Univ. College Cork (Ireland)
J.-M. Lamy, Univ. College Cork (Ireland)
J. Justice, Univ. College Cork (Ireland)
G. Lévêque, Univ. College Cork (Ireland)

Published in SPIE Proceedings Vol. 7712:
Nanophotonics III
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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