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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 4 — Feb. 15, 2009
  • pp: 479–481

Long-range plasmons in lossy metal films on photonic crystal surfaces

Valery N. Konopsky and Elena V. Alieva  »View Author Affiliations


Optics Letters, Vol. 34, Issue 4, pp. 479-481 (2009)
http://dx.doi.org/10.1364/OL.34.000479


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Abstract

A one-dimensional (1D) photonic crystal structure with a terminal palladium layer supporting long-range surface plasmon polariton (LRSPP) waves in any gaseous environment is described. We show that LRSPP propagation may be achieved not only along “good plasmonic” metals such as Ag and Au but also along lossy metals such as Pd, which does not usually support plasmon propagation in the visible spectral range with ordinary Kretschmann excitation. The possibility of the LRSPP propagation along catalytically active metals such as Pd or Pt opens up new perspectives for studying of (photo)chemical surface reactions and offers the potential for more applications in the general area of catalysis, photocatalysis, and plasmon-mediated chemistry. We present experimental results that demonstrate the hydrogen sensitivity of this photonic structure incorporating a catalytically active 8 - nm -thick Pd final layer. A 3% hydrogen concentration in nitrogen is detected with a signal-to-noise ratio of approximately 300, with a response time of about 10 s at room temperature.

© 2009 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(240.6680) Optics at surfaces : Surface plasmons

ToC Category:
Integrated Optics

History
Original Manuscript: September 26, 2008
Manuscript Accepted: December 17, 2008
Published: February 11, 2009

Citation
Valery N. Konopsky and Elena V. Alieva, "Long-range plasmons in lossy metal films on photonic crystal surfaces," Opt. Lett. 34, 479-481 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-4-479

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