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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
; ; and
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
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)
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
2016-04-01 16:21:00
date last changed
2022-01-28 19:06:46
@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}},
  url          = {{http://www.opticsinfobase.org/abstract.cfm?URI=ol-32-6-680}},
  volume       = {{32}},
  year         = {{2007}},
}