Microlens coupled interdigital photoconductive switch

被引：47

作者：

Matthaeus, Gabor ^{[1
]}

Nolte, Stefan ^{[1
]}

Hohmuth, Rico ^{[2
]}

Voitsch, Martin ^{[2
]}

Richter, Wolfgang ^{[2
]}

Pradarutti, Boris ^{[3
]}

Riehemann, Stefan ^{[3
]}

Notni, Gunther ^{[3
]}

Tunnermann, Andreas ^{[3
]}

机构：

[1] Univ Jena, Inst Appl Phys, D-07743 Jena, Germany

[2] BATOP GmbH, D-07745 Jena, Germany

[3] Fraunhofer Inst Appl Opt & Precis Engn, D-07745 Jena, Germany

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 09期

关键词：

D O I：

10.1063/1.2976162

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A large-area terahertz emitter based on an interdigital finger electrode photoconductive switch on low-temperature grown GaAs attached to a hexagonal microlens array is demonstrated. The hexagonal arranged microlenses direct the incident IR excitation pulses into specified electrode gaps, resulting in constructive interference in the terahertz far field. Using a Ti:sapphire oscillator running at 80 MHz with 150 fs pulses, 6.5 mu m THz average power at 540 mW optical excitation is obtained. The maximum IR-to-terahertz conversion efficiency achieved is >= 1.35x10(-5). (c) 2008 American Institute of Physics.

引用

页数：3

共 11 条

[1] Characterization of low temperature GaAs antenna array terahertz emitters
Awad, M.
Nagel, M.
Kurz, H.
Herfort, J.
Ploog, K.
[J]. APPLIED PHYSICS LETTERS, 2007, 91 (18)
[2] SCALING OF TERAHERTZ RADIATION FROM LARGE-APERTURE BIASED PHOTOCONDUCTORS
BENICEWICZ, PK
ROBERTS, JP
TAYLOR, AJ
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1994, 11 (12) : 2533 - 2546
[3] High-intensity terahertz radiation from a microstructured large-area photoconductor
Dreyhaupt, A
Winnerl, S
Dekorsy, T
Helm, M
[J]. APPLIED PHYSICS LETTERS, 2005, 86 (12) : 1 - 3
[4] FAR-INFRARED TIME-DOMAIN SPECTROSCOPY WITH TERAHERTZ BEAMS OF DIELECTRICS AND SEMICONDUCTORS
GRISCHKOWSKY, D
KEIDING, S
VANEXTER, M
FATTINGER, C
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1990, 7 (10) : 2006 - 2015
[5] Detection of THz pulses by phase retardation in lithium tantalate
Jepsen, PU
Winnewisser, C
Schall, M
Schyja, V
Keiding, SR
Helm, H
[J]. PHYSICAL REVIEW E, 1996, 53 (04) : R3052 - R3054
[6] KIMA DS, 2006, APPL PHYS LETT, V88
[7] Generation of THz radiation using bulk, periodically and aperiodically poled lithium niobate - Part 1: Theory
L'huillier, J. A.
Torosyan, G.
Theuer, M.
Avetisyan, Y.
Beigang, R.
[J]. APPLIED PHYSICS B-LASERS AND OPTICS, 2007, 86 (02): : 185 - 196
[8] Generation of THz radiation using bulk, periodically and aperiodically poled lithium niobate - Part 2: Experiments
L'huillier, J. A.
Torosyan, G.
Theuer, M.
Rau, C.
Avetisyan, Y.
Beigang, R.
[J]. APPLIED PHYSICS B-LASERS AND OPTICS, 2007, 86 (02): : 197 - 208
[9] A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling
Nahata, A
Weling, AS
Heinz, TF
[J]. APPLIED PHYSICS LETTERS, 1996, 69 (16) : 2321 - 2323
[10] ULTRAFAST LOCAL FIELD-DYNAMICS IN PHOTOCONDUCTIVE THZ ANTENNAS
PEDERSEN, JE
LYSSENKO, VG
HVAM, JM
JEPSEN, PU
KEIDING, SR
SORENSEN, CB
LINDELOF, PE
[J]. APPLIED PHYSICS LETTERS, 1993, 62 (11) : 1265 - 1267

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