Fast one-dimensional photonic crystal modulators for the terahertz range
(2007) In Optics Express 15(14). p.8898-8912- Abstract
- Optically controlled one-dimensional photonic crystal structures for the THz range are studied both theoretically and experimentally. A GaAs:Cr layer constitutes a defect in the photonic crystals studied; its photoexcitation by 800 nm optical femtosecond pulses leads to the modulation of the THz beam. Since the THz field can be localized in the photoexcited layer of the photonic crystal, the interaction between photocarriers and THz light is strengthened and yields an appreciable modulation of the THz output beam even for low optical pump fluences. Optimum resonant structures are found, constructed and experimentally studied. The dynamical response of these elements is shown to be controlled by the lifetime of THz photons in the resonator... (More)
- Optically controlled one-dimensional photonic crystal structures for the THz range are studied both theoretically and experimentally. A GaAs:Cr layer constitutes a defect in the photonic crystals studied; its photoexcitation by 800 nm optical femtosecond pulses leads to the modulation of the THz beam. Since the THz field can be localized in the photoexcited layer of the photonic crystal, the interaction between photocarriers and THz light is strengthened and yields an appreciable modulation of the THz output beam even for low optical pump fluences. Optimum resonant structures are found, constructed and experimentally studied. The dynamical response of these elements is shown to be controlled by the lifetime of THz photons in the resonator and by the free carrier lifetime. The time response of the structures studied is shorter than 330 ps. (c) 2007 Optical Society of America. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/691410
- author
- Fekete, L. ; Kadlec, F. ; Nemec, Hynek LU and Kuzel, P.
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Express
- volume
- 15
- issue
- 14
- pages
- 8898 - 8912
- publisher
- Optical Society of America
- external identifiers
-
- wos:000248393900045
- scopus:34547180322
- ISSN
- 1094-4087
- 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
- 1958e412-abe4-40c5-bd1e-01c61201aba3 (old id 691410)
- alternative location
- http://www.opticsinfobase.org/abstract.cfm?URI=oe-15-14-8898
- date added to LUP
- 2016-04-01 17:09:52
- date last changed
- 2025-04-04 14:35:20
@article{1958e412-abe4-40c5-bd1e-01c61201aba3,
abstract = {{Optically controlled one-dimensional photonic crystal structures for the THz range are studied both theoretically and experimentally. A GaAs:Cr layer constitutes a defect in the photonic crystals studied; its photoexcitation by 800 nm optical femtosecond pulses leads to the modulation of the THz beam. Since the THz field can be localized in the photoexcited layer of the photonic crystal, the interaction between photocarriers and THz light is strengthened and yields an appreciable modulation of the THz output beam even for low optical pump fluences. Optimum resonant structures are found, constructed and experimentally studied. The dynamical response of these elements is shown to be controlled by the lifetime of THz photons in the resonator and by the free carrier lifetime. The time response of the structures studied is shorter than 330 ps. (c) 2007 Optical Society of America.}},
author = {{Fekete, L. and Kadlec, F. and Nemec, Hynek and Kuzel, P.}},
issn = {{1094-4087}},
language = {{eng}},
number = {{14}},
pages = {{8898--8912}},
publisher = {{Optical Society of America}},
series = {{Optics Express}},
title = {{Fast one-dimensional photonic crystal modulators for the terahertz range}},
url = {{http://www.opticsinfobase.org/abstract.cfm?URI=oe-15-14-8898}},
volume = {{15}},
year = {{2007}},
}