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Fast relaxation of free carriers in compensated n- and p-type germanium

Deßmann, N. and Pavlov, S.G. and Mittendorff, Martin and Winnerl, Stephan and Zhukavin, R.Kh. and Tsyplenkov, V.V. and Shengurov, D.V. and Shastin, V.N. and Abrosimov, Nickolay and Riemann, H. and Hübers, Heinz-Wilhelm (2013) Fast relaxation of free carriers in compensated n- and p-type germanium. IRMMW 2013, 01.-06. Sep. 2013, Mainz, Deutschland.

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Abstract

The relaxation of free holes and electrons in highly compensated germanium doped by gallium (p-Ge:Ga:Sb) and antimony (n-Ge:Sb:Ga) has been studied by a pump-probe experiment with the free-electron laser FELBE at the Helmholtz-Zentrum Dresden-Rossendorf. The relaxation times vary between 20 ps and 300 ps and depend on the incident THz intensity and compensation level. The relaxation times are about five times shorter than previously obtained for uncompensated n-Ge:Sb and p-Ge:Ga. The results support the development of fast photoconductive detectors in the THz frequency range.

Item URL in elib:https://elib.dlr.de/81769/
Document Type:Conference or Workshop Item (Speech)
Title:Fast relaxation of free carriers in compensated n- and p-type germanium
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Deßmann, N.nils.dessmann (at) dlr.deUNSPECIFIED
Pavlov, S.G.sergeij.pavlov (at) dlr.deUNSPECIFIED
Mittendorff, Martinm.mittendorff (at) hzdr.deUNSPECIFIED
Winnerl, Stephans.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
Abrosimov, NickolayLeibniz-Institut für Kristallzüchtung (IKZ), BerlinUNSPECIFIED
Riemann, H.Institute of Crystal Growth, BerlinUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:September 2013
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:THz, Terahertz, Detector, Germanium, Free Electron Laser, FEL, time-resolved, Pump-probe
Event Title:IRMMW 2013
Event Location:Mainz, Deutschland
Event Type:international Conference
Event Dates:01.-06. Sep. 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management (old)
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - Project OPTIMODE (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: Deßmann, Nils
Deposited On:08 Jan 2014 14:19
Last Modified:31 Jul 2019 19:40

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