ULTRAFAST LOCAL FIELD-DYNAMICS IN PHOTOCONDUCTIVE THZ ANTENNAS

J. E. Pedersen; V. G. Lyssenko; J. M. Hvam; Peter Uhd Jepsen; S. R. Keiding; C. B. Sørensen; P. E. Lindelof

doi:10.1063/1.108702

ULTRAFAST LOCAL FIELD-DYNAMICS IN PHOTOCONDUCTIVE THZ ANTENNAS

J. E. Pedersen, V. G. Lyssenko, J. M. Hvam, Peter Uhd Jepsen, S. R. Keiding, C. B. Sørensen, P. E. Lindelof

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

We demonstrate a new ultrafast pump-probe technique using terahertz pulses to investigate carrier transport and screening in semiconductors. As an example we have studied the temporal evolution of the local electric field in a dipole antenna, used for generation of ultrafast terahertz pulses. Ultrafast screening effects are shown to be important for both carrier transport and the emission of THz radiation. At high carrier densities the external bias field is screened on a time scale comparable to the duration of the THz pulse, giving rise to changes in the shape and bandwidth of the radiated pulses.

Original language	English
Journal	Applied Physics Letters
Volume	62
Issue number	11
Pages (from-to)	1265-1267
Number of pages	3
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.108702
Publication status	Published - 15 Mar 1993
Externally published	Yes

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title = "ULTRAFAST LOCAL FIELD-DYNAMICS IN PHOTOCONDUCTIVE THZ ANTENNAS",

abstract = "We demonstrate a new ultrafast pump-probe technique using terahertz pulses to investigate carrier transport and screening in semiconductors. As an example we have studied the temporal evolution of the local electric field in a dipole antenna, used for generation of ultrafast terahertz pulses. Ultrafast screening effects are shown to be important for both carrier transport and the emission of THz radiation. At high carrier densities the external bias field is screened on a time scale comparable to the duration of the THz pulse, giving rise to changes in the shape and bandwidth of the radiated pulses.",

author = "Pedersen, {J. E.} and Lyssenko, {V. G.} and Hvam, {J. M.} and Jepsen, {Peter Uhd} and Keiding, {S. R.} and S{\o}rensen, {C. B.} and Lindelof, {P. E.}",

year = "1993",

month = mar,

day = "15",

doi = "10.1063/1.108702",

language = "English",

volume = "62",

pages = "1265--1267",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - ULTRAFAST LOCAL FIELD-DYNAMICS IN PHOTOCONDUCTIVE THZ ANTENNAS

AU - Pedersen, J. E.

AU - Lyssenko, V. G.

AU - Hvam, J. M.

AU - Jepsen, Peter Uhd

AU - Keiding, S. R.

AU - Sørensen, C. B.

AU - Lindelof, P. E.

PY - 1993/3/15

Y1 - 1993/3/15

N2 - We demonstrate a new ultrafast pump-probe technique using terahertz pulses to investigate carrier transport and screening in semiconductors. As an example we have studied the temporal evolution of the local electric field in a dipole antenna, used for generation of ultrafast terahertz pulses. Ultrafast screening effects are shown to be important for both carrier transport and the emission of THz radiation. At high carrier densities the external bias field is screened on a time scale comparable to the duration of the THz pulse, giving rise to changes in the shape and bandwidth of the radiated pulses.

AB - We demonstrate a new ultrafast pump-probe technique using terahertz pulses to investigate carrier transport and screening in semiconductors. As an example we have studied the temporal evolution of the local electric field in a dipole antenna, used for generation of ultrafast terahertz pulses. Ultrafast screening effects are shown to be important for both carrier transport and the emission of THz radiation. At high carrier densities the external bias field is screened on a time scale comparable to the duration of the THz pulse, giving rise to changes in the shape and bandwidth of the radiated pulses.

U2 - 10.1063/1.108702

DO - 10.1063/1.108702

M3 - Journal article

SN - 0003-6951

VL - 62

SP - 1265

EP - 1267

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

ER -

ULTRAFAST LOCAL FIELD-DYNAMICS IN PHOTOCONDUCTIVE THZ ANTENNAS

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