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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 20, Iss. 7 — Jul. 1, 2003
  • pp: 1538–1541

Origin of absorption enhancement in a tungsten, three-dimensional photonic crystal

S. Y. Lin, J. G. Fleming, Z. Y. Li, I. El-Kady, R. Biswas, and K. M. Ho  »View Author Affiliations


JOSA B, Vol. 20, Issue 7, pp. 1538-1541 (2003)
http://dx.doi.org/10.1364/JOSAB.20.001538


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Abstract

A three-dimensional, metallic photonic crystal is realized and its absorption measured at infrared wavelengths. The metallic absorption rate is found to be suppressed in the photonic bandgap regime (λ∼8–20 μm). On the other hand, order-of-magnitude absorption enhancement is observed at the photonic band edge (λ∼5.8 μm). The enhancement is attributed to the slower group velocity of light at the photonic band edge, a longer photon–matter interaction length, and a finite intrinsic absorption of tungsten.

© 2003 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(250.0250) Optoelectronics : Optoelectronics
(270.0270) Quantum optics : Quantum optics

Citation
S. Y. Lin, J. G. Fleming, Z. Y. Li, I. El-Kady, R. Biswas, and K. M. Ho, "Origin of absorption enhancement in a tungsten, three-dimensional photonic crystal," J. Opt. Soc. Am. B 20, 1538-1541 (2003)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-20-7-1538


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