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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 9 — Apr. 28, 2008
  • pp: 6387–6396

Proof-of-principle of surface detection with air-guided quantum cascade lasers

Virginie Moreau, Raffaele Colombelli, Raviv Perahia, Oskar Painter, Luke R. Wilson, and Andrey B. Krysa  »View Author Affiliations

Optics Express, Vol. 16, Issue 9, pp. 6387-6396 (2008)

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We report a proof-of-principle of surface detection with air-guided quantum cascade lasers. Laser ridges were designed to exhibit an evanescent electromagnetic field on their top surface that can interact with material or liquids deposited on the device. We employ photoresist and common solvents to provide a demonstration of the sensor setup. We observed spectral as well as threshold currents changes as a function of the deposited material absorption curve. A simple model, supplemented by 2D numerical finite element method simulations, allows one to explain and correctly predict the experimental results.

© 2008 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.5750) Optical devices : Resonators
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 12, 2008
Revised Manuscript: April 1, 2008
Manuscript Accepted: April 5, 2008
Published: April 21, 2008

Virtual Issues
Vol. 3, Iss. 5 Virtual Journal for Biomedical Optics

Virginie Moreau, Raffaele Colombelli, Raviv Perahia, Oskar Painter, Luke R. Wilson, and Andrey B. Krysa, "Proof-of-principle of surface detection with air-guided quantum cascade lasers," Opt. Express 16, 6387-6396 (2008)

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