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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 21 — Oct. 10, 2011
  • pp: 20808–20816

Out-of-plane resonances in terahertz photonic crystal slabs modulated by optical pumping

Yulei Shi, Qing-li Zhou, Wei Liu, and Cunlin Zhang  »View Author Affiliations


Optics Express, Vol. 19, Issue 21, pp. 20808-20816 (2011)
http://dx.doi.org/10.1364/OE.19.020808


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Abstract

This paper describes detailed optical-pump-terahertz-probe studies of two-dimensional photonic crystal slabs for propagation perpendicular to the slabs. When the slabs are excited by an 800 nm pump pulse and the effect of shielding by photocarriers is removed, we find that the decaying tail in the transmitted terahertz radiation is strikingly enhanced. The photocarriers weaken guided resonances, but they also greatly enhance the excitation efficiency of guided resonances and the ability of the guided resonances to transfer energy back to the radiation field. This increases the resonance-assisted contribution to transmitted field. The photoinduced resonant extremes agree well with the Fano model.

© 2011 OSA

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(260.5740) Physical optics : Resonance
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

History
Original Manuscript: July 22, 2011
Revised Manuscript: September 16, 2011
Manuscript Accepted: September 19, 2011
Published: October 4, 2011

Citation
Yulei Shi, Qing-li Zhou, Wei Liu, and Cunlin Zhang, "Out-of-plane resonances in terahertz photonic crystal slabs modulated by optical pumping," Opt. Express 19, 20808-20816 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-21-20808


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