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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 12 — Jun. 15, 2007
  • pp: 1620–1622

Ultrafast optical switching of terahertz metamaterials fabricated on Er As Ga As nanoisland superlattices

Hou-Tong Chen, Willie J. Padilla, Joshua M.O. Zide, Seth R. Bank, Arthur C. Gossard, Antoinette J. Taylor, and Richard D. Averitt  »View Author Affiliations


Optics Letters, Vol. 32, Issue 12, pp. 1620-1622 (2007)
http://dx.doi.org/10.1364/OL.32.001620


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Abstract

We demonstrate optical switching of electrically resonant terahertz planar metamaterials fabricated on Er As Ga As nanoisland superlattice substrates. Photoexcited charge carriers in the superlattice shunt the capacitive regions of the constituent elements, thereby modulating the resonant response of the metamaterials. A switching recovery time of 20 ps results from fast carrier recombination in the Er As Ga As superlattice substrates.

© 2007 Optical Society of America

OCIS Codes
(160.5140) Materials : Photoconductive materials
(230.1150) Optical devices : All-optical devices
(230.3990) Optical devices : Micro-optical devices
(230.4110) Optical devices : Modulators
(300.6270) Spectroscopy : Spectroscopy, far infrared
(320.7080) Ultrafast optics : Ultrafast devices

ToC Category:
Ultrafast Optics

History
Original Manuscript: February 15, 2007
Manuscript Accepted: April 1, 2007
Published: June 5, 2007

Citation
Hou-Tong Chen, Willie J. Padilla, Joshua M. O. Zide, Seth R. Bank, Arthur C. Gossard, Antoinette J. Taylor, and Richard D. Averitt, "Ultrafast optical switching of terahertz metamaterials fabricated on ErAs/GaAs nanoisland superlattices," Opt. Lett. 32, 1620-1622 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-12-1620

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