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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 22 — Nov. 15, 2013
  • pp: 4632–4635

Mechanism of optical terahertz-transmission modulation in an organic/inorganic semiconductor interface and its application to active metamaterials

Tatsunosuke Matsui, Ryosuke Takagi, Keisuke Takano, and Masanori Hangyo  »View Author Affiliations


Optics Letters, Vol. 38, Issue 22, pp. 4632-4635 (2013)
http://dx.doi.org/10.1364/OL.38.004632


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Abstract

Terahertz (THz) transmission modulation through copper phthalocyanine (CuPc)-coated Si under various laser light irradiation conditions was investigated using THz time-domain spectroscopy. The charge carrier transfer from Si to CuPc is crucial for photo-induced metallization, and the thickness of the CuPc layer is a critical parameter for achieving high charge carrier density for metallization. Transmission through a split-ring resonator array metamaterial, fabricated on CuPc-coated Si, can be efficiently modulated by laser light irradiation. Our findings may open the way for various types of metamaterials using organic conjugated materials that are suitable for easy device fabrication using printing technologies.

© 2013 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(230.4110) Optical devices : Modulators
(240.6680) Optics at surfaces : Surface plasmons
(160.3918) Materials : Metamaterials
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Materials

History
Original Manuscript: July 19, 2013
Revised Manuscript: October 6, 2013
Manuscript Accepted: October 7, 2013
Published: November 7, 2013

Citation
Tatsunosuke Matsui, Ryosuke Takagi, Keisuke Takano, and Masanori Hangyo, "Mechanism of optical terahertz-transmission modulation in an organic/inorganic semiconductor interface and its application to active metamaterials," Opt. Lett. 38, 4632-4635 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-22-4632


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