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Ultrafast opto-terahertz photonic crystal modulator

Fekete, L; Kadlec, F; Kuzel, P and Nemec, Hynek LU (2007) In Optics Letters 32(6). p.680-682
Abstract
We present an agile optically controlled switch or modulator of terahertz (THz) radiation. The element is based on a one-dimensional photonic crystal with a GaAs wafer inserted in the middle as a defect layer. The THz electric field is enhanced in the photonic structure at the surfaces of the Ga-As wafer. Excitation of the front GaAs surface by ultrashort 8 10 nm laser pulses then leads to an efficient modulation of the THz beam even at low photocarrier concentrations (approximate to 10(16) cm(-3)). The response time of the element to pulsed photoexcitation is about 130 ps. (c) 2007 Optical Society of America.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
32
issue
6
pages
680 - 682
publisher
Optical Society of America
external identifiers
  • wos:000244726900033
  • scopus:33847674119
ISSN
0146-9592
language
English
LU publication?
yes
id
bed94550-d332-429d-a10a-020df18b0c67 (old id 671568)
alternative location
http://www.opticsinfobase.org/abstract.cfm?URI=ol-32-6-680
date added to LUP
2007-12-11 20:42:31
date last changed
2017-10-01 04:44:00
@article{bed94550-d332-429d-a10a-020df18b0c67,
  abstract     = {We present an agile optically controlled switch or modulator of terahertz (THz) radiation. The element is based on a one-dimensional photonic crystal with a GaAs wafer inserted in the middle as a defect layer. The THz electric field is enhanced in the photonic structure at the surfaces of the Ga-As wafer. Excitation of the front GaAs surface by ultrashort 8 10 nm laser pulses then leads to an efficient modulation of the THz beam even at low photocarrier concentrations (approximate to 10(16) cm(-3)). The response time of the element to pulsed photoexcitation is about 130 ps. (c) 2007 Optical Society of America.},
  author       = {Fekete, L and Kadlec, F and Kuzel, P and Nemec, Hynek},
  issn         = {0146-9592},
  language     = {eng},
  number       = {6},
  pages        = {680--682},
  publisher    = {Optical Society of America},
  series       = {Optics Letters},
  title        = {Ultrafast opto-terahertz photonic crystal modulator},
  volume       = {32},
  year         = {2007},
}