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Towards a life-time-limited 8-octave-infrared photoconductive germanium detector

Pavlov, S.G. and Deßmann, N. and Pohl, Andreas and Abrosimov, Nickolay and Mittendorff, Martin and Winnerl, S. and Zhukavin, R.Kh. and Tsyplenkov, V.V. and Shengurov, D.V. and Shastin, V.N. and Hübers, Heinz-Wilhelm (2015) Towards a life-time-limited 8-octave-infrared photoconductive germanium detector. Journal of Physics: Conference Series, 647, 012070. Institute of Physics (IOP) Publishing. DOI: 10.1088/1742-6596/647/1/012070 ISSN 1742-6588

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Official URL: http://iopscience.iop.org/article/10.1088/1742-6596/647/1/012070/pdf

Abstract

Ultrafast, ultra-broad-band photoconductive detector based on heavily doped and highly compensated germanium has been demonstrated. Such a material demonstrates optical sensitivity in the more than 8 octaves, in the infrared, from about 2 mm to about 8 μm. The spectral sensitivity peaks up between 2 THz and 2.5 THz and is slowly reduced towards lower and higher frequencies. The life times of free electrons/holes measured by a pump-probe technique approach a few tenths of picoseconds and remain almost independent on the optical input intensity and on the temperature of a detector in the operation range. During operation, a detector is cooled down to liquid helium temperature but has been approved to detect, with a reduced sensitivity, up to liquid nitrogen temperature. The response time is shorter than 200 ps that is significantly faster than previously reported times.

Item URL in elib:https://elib.dlr.de/100843/
Document Type:Article
Title:Towards a life-time-limited 8-octave-infrared photoconductive germanium detector
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pavlov, S.G.DLR Institute of Optical Sensor SystemsUNSPECIFIED
Deßmann, N.nils.dessmann (at) dlr.deUNSPECIFIED
Pohl, Andreasa.pohl (at) dlr.deUNSPECIFIED
Abrosimov, NickolayLeibniz-Institut für Kristallzüchtung (IKZ), BerlinUNSPECIFIED
Mittendorff, Martinm.mittendorff (at) hzdr.deUNSPECIFIED
Winnerl, S.s.winnerl (at) hzdr.deUNSPECIFIED
Zhukavin, R.Kh.Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, RussiaUNSPECIFIED
Tsyplenkov, V.V.Institute for Physics of Microstructures, Russain Academy of SciencesUNSPECIFIED
Shengurov, D.V.Institute for Physics of Microstructures, Russain Academy of SciencesUNSPECIFIED
Shastin, V.N.Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhny Novgorod, RussiaUNSPECIFIED
Hübers, Heinz-WilhelmDLR, Institut für Optische SensorsystemeUNSPECIFIED
Date:2015
Journal or Publication Title:Journal of Physics: Conference Series
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:647
DOI :10.1088/1742-6596/647/1/012070
Page Range:012070
Publisher:Institute of Physics (IOP) Publishing
ISSN:1742-6588
Status:Published
Keywords:infrared untrafast broad-band photoconductive detector
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben OptoRob, R - Vorhaben Optische Technologien und Anwendungen
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems
Deposited By: Pavlov, Dr. Sergey
Deposited On:14 Dec 2015 07:29
Last Modified:08 Mar 2018 18:44

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