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Investigation of the role of the lateral photo-Dember effect in the generation of terahertz radiation using a metallic mask on a semiconductor

Investigation of the role of the lateral photo-Dember effect in the generation of terahertz radiation using a metallic mask on a semiconductor
Investigation of the role of the lateral photo-Dember effect in the generation of terahertz radiation using a metallic mask on a semiconductor
Pulses of coherent terahertz radiation can be efficiently generated by a lateral diffusion current after ultrafast generation of photo-carriers near a metal interface on the surface of a semiconductor, this is known as the lateral photo-Dember effect. We investigate how the emission depends on the pump spot position, size, power and how it is affected by the application of an applied external bias. We study the role of the metallic mask and how it suppresses emission from the carriers diffusing under it due to a reduction of available radiation states both theoretically and experimentally.
1094-4087
16263-16272
Barnes, M.E.
02cc9817-23c5-4ddb-855b-1ca14818e67d
Berry, S.A.
0f768f48-36c4-4599-8917-7aae657378a7
Gow, P.
193394b1-fe2d-41de-a9aa-6de7e5925b18
McBryde, D.
f7bf01f5-a1b3-4873-9067-2d118d8dc714
Daniell, G.J.
82c59eea-5002-4889-8823-2c6e5b3288d3
Beere, H.E.
4068dbab-16c4-444e-8c9c-d56f71da5c50
Ritchie, D.A.
83562b7e-0986-4822-9cfe-8c4ac95596c7
Apostolopoulos, V.
8a898740-4c71-4040-a577-9b9d70530b4d
Barnes, M.E.
02cc9817-23c5-4ddb-855b-1ca14818e67d
Berry, S.A.
0f768f48-36c4-4599-8917-7aae657378a7
Gow, P.
193394b1-fe2d-41de-a9aa-6de7e5925b18
McBryde, D.
f7bf01f5-a1b3-4873-9067-2d118d8dc714
Daniell, G.J.
82c59eea-5002-4889-8823-2c6e5b3288d3
Beere, H.E.
4068dbab-16c4-444e-8c9c-d56f71da5c50
Ritchie, D.A.
83562b7e-0986-4822-9cfe-8c4ac95596c7
Apostolopoulos, V.
8a898740-4c71-4040-a577-9b9d70530b4d

Barnes, M.E., Berry, S.A., Gow, P., McBryde, D., Daniell, G.J., Beere, H.E., Ritchie, D.A. and Apostolopoulos, V. (2013) Investigation of the role of the lateral photo-Dember effect in the generation of terahertz radiation using a metallic mask on a semiconductor. Optics Express, 21 (14), 16263-16272. (doi:10.1364/OE.21.016263). (PMID:23938477)

Record type: Article

Abstract

Pulses of coherent terahertz radiation can be efficiently generated by a lateral diffusion current after ultrafast generation of photo-carriers near a metal interface on the surface of a semiconductor, this is known as the lateral photo-Dember effect. We investigate how the emission depends on the pump spot position, size, power and how it is affected by the application of an applied external bias. We study the role of the metallic mask and how it suppresses emission from the carriers diffusing under it due to a reduction of available radiation states both theoretically and experimentally.

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More information

e-pub ahead of print date: 1 June 2013
Published date: 15 July 2013
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 356136
URI: https://eprints.soton.ac.uk/id/eprint/356136
ISSN: 1094-4087
PURE UUID: 50fe79d1-75e9-4dc2-8c0b-4f0a0a7a559f
ORCID for S.A. Berry: ORCID iD orcid.org/0000-0002-9538-8655
ORCID for P. Gow: ORCID iD orcid.org/0000-0002-3247-9082
ORCID for V. Apostolopoulos: ORCID iD orcid.org/0000-0003-3733-2191

Catalogue record

Date deposited: 11 Sep 2013 10:17
Last modified: 29 Oct 2019 01:47

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Contributors

Author: M.E. Barnes
Author: S.A. Berry ORCID iD
Author: P. Gow ORCID iD
Author: D. McBryde
Author: G.J. Daniell
Author: H.E. Beere
Author: D.A. Ritchie

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