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Browse Journals & Magazines > Applied Physics Letters ...> Volume:94 Issue:9 Help

Self-mixing interferometry in vertical-cavity surface-emitting lasers for nanomechanical cantilever sensing

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5 Author(s)
Larsson, David ; Department of Photonics Engineering, Technical University of Denmark, Ørsteds Plads, DK 2800 Kgs Lyngby, Denmark ; Greve, Anders ; Hvam, Jørn M. ; Boisen, Anja
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3086893 

We have experimentally investigated self-mixing interference produced by the feedback of light from a polymer micrometer-sized cantilever into a vertical-cavity surface-emitting laser for sensing applications. In particular we have investigated how the visibility of the optical output power and the junction voltage depends on the laser injection current and the distance to the cantilever. The highest power visibility obtained from cantilevers without reflective coatings was ∼60%, resulting in a very high sensitivity of 45 mV/nm with a noise floor below 1.2 mV. Different detection schemes are discussed.

Published in:
Applied Physics Letters  (Volume:94 ,  Issue: 9 )

Date of Publication: Mar 2009

Page(s):
091103 - 091103-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3086893
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Mar 2009

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