Wienold, Martin and Pavlov, Sergey and Abrosimov, N. V. and Hübers, Heinz-Wilhelm (2019) High-resolution, background-free spectroscopy of shallow-impurity transitions in semiconductors with a terahertz photomixer source. Applied Physics Letters, 114, 092103. American Institute of Physics (AIP). DOI: 10.1063/1.5081030 ISSN 0003-6951
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Official URL: https://doi.org/10.1063/1.5081030
Abstract
We report on a method which enables background-free spectroscopy of the narrow absorption lines of shallow impurity transitions in low-doped and high-purity semiconductors, providing a much better spectral resolution than standard Fourier-transform spectrometers. To achieve this, we combined high-resolution continuous-wave terahertz spectroscopy based on a photomixer system with a bandgap excitation scheme for varying the concentration of neutral impurities. For the minority doping species, the lifetime of the excited states can be directly inferred from such a measurement by analyzing the line shape with respect to the width of the lifetime-related Lorentzian contribution.
Item URL in elib: | https://elib.dlr.de/127294/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | High-resolution, background-free spectroscopy of shallow-impurity transitions in semiconductors with a terahertz photomixer source | |||||||||||||||
Authors: |
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Date: | 8 March 2019 | |||||||||||||||
Journal or Publication Title: | Applied Physics Letters | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | Yes | |||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||
Volume: | 114 | |||||||||||||||
DOI : | 10.1063/1.5081030 | |||||||||||||||
Page Range: | 092103 | |||||||||||||||
Publisher: | American Institute of Physics (AIP) | |||||||||||||||
ISSN: | 0003-6951 | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | semiconductor spectroscopy; shallow-impurity transitions; photomixer sources | |||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||
HGF - Program: | Space | |||||||||||||||
HGF - Program Themes: | other | |||||||||||||||
DLR - Research area: | Raumfahrt | |||||||||||||||
DLR - Program: | R - no assignment | |||||||||||||||
DLR - Research theme (Project): | R - no assignment | |||||||||||||||
Location: | Berlin-Adlershof | |||||||||||||||
Institutes and Institutions: | Institute of Optical Sensor Systems | |||||||||||||||
Deposited By: | Wienold, Martin | |||||||||||||||
Deposited On: | 30 Apr 2019 08:54 | |||||||||||||||
Last Modified: | 30 Apr 2019 08:54 |
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