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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 9 — Mar. 19, 2004
  • pp: 1965–1970

Time-domain terahertz study of defect formation in one-dimensional photonic crystals

Hynek Němec, Petr Kužel, Frédéric Garet, and Lionel Duvillaret  »View Author Affiliations


Applied Optics, Vol. 43, Issue 9, pp. 1965-1970 (2004)
http://dx.doi.org/10.1364/AO.43.001965


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Abstract

One-dimensional photonic crystals composed of silicon and air layers with and without twinning defect (i.e., a periodicity break where one half of the photonic structure is a mirror image of the other one) are studied by means of terahertz time-domain transmission and reflection spectroscopy. The structure with defect is decomposed into building blocks: two twins and a defect. A phase-sensitive characterization in transmission and reflection allows us to fully determine the transfer matrices of any block and consequently to predict the properties of composed structures regardless of the microstructure of the constituting blocks. It is shown and experimentally demonstrated that the defect level position is controlled by the reflectance phase of the twins. Possible approach of the reflectance phase determination by use of Kramers-Kronig analysis is also discussed.

© 2004 Optical Society of America

OCIS Codes
(230.4170) Optical devices : Multilayers
(300.6240) Spectroscopy : Spectroscopy, coherent transient

History
Original Manuscript: September 5, 2003
Revised Manuscript: November 10, 2003
Published: March 20, 2004

Citation
Hynek Němec, Petr Kužel, Frédéric Garet, and Lionel Duvillaret, "Time-domain terahertz study of defect formation in one-dimensional photonic crystals," Appl. Opt. 43, 1965-1970 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-9-1965

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