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.
16263-16272
Barnes, M.E.
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Berry, S.A.
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Gow, P.
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McBryde, D.
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Daniell, G.J.
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Beere, H.E.
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Ritchie, D.A.
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Apostolopoulos, V.
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15 July 2013
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), .
(doi:10.1364/OE.21.016263).
(PMID:23938477)
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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e-pub ahead of print date: 1 June 2013
Published date: 15 July 2013
Organisations:
Quantum, Light & Matter Group
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Local EPrints ID: 356136
URI: http://eprints.soton.ac.uk/id/eprint/356136
ISSN: 1094-4087
PURE UUID: 50fe79d1-75e9-4dc2-8c0b-4f0a0a7a559f
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Date deposited: 11 Sep 2013 10:17
Last modified: 15 Mar 2024 03:42
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Author:
M.E. Barnes
Author:
S.A. Berry
Author:
D. McBryde
Author:
G.J. Daniell
Author:
H.E. Beere
Author:
D.A. Ritchie
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