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Terahertz wavefront measurement with a Hartmann sensor

Richter, Heiko and Greiner-Bär, Michael and Deßmann, Nils and Pfund, Johannes and Wienold, Martin and Schrottke, Lutz and Hey, Robert and Grahn, Holger-T. and Hübers, Heinz-Wilhelm (2012) Terahertz wavefront measurement with a Hartmann sensor. Applied Physics Letters, 101 (031103), 031103. American Institute of Physics (AIP). DOI: 10.1063/1.4737164

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1063/1.4737164

Abstract

The measurement of the wavefront of a terahertz (THz) beam is essential for the development of any optical instrument operating at THz frequencies. We have realized a Hartmann wavefront sensor for the THz frequency range. The sensor is based on an aperture plate consisting of a regular square pattern of holes and a microbolometer camera. The performance of the sensor is demonstrated by characterizing the wavefront of a THz beam emitted by a quantum-cascade laser. The wavefront determined by the sensor agrees well with that expected from a Gaussian-shaped beam. The spatial resolution is 1 mm, and a single-wavefront measurement takes less than 1 s.

Item URL in elib:https://elib.dlr.de/78695/
Document Type:Article
Title:Terahertz wavefront measurement with a Hartmann sensor
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richter, HeikoHeiko.Richter (at) dlr.deUNSPECIFIED
Greiner-Bär, MichaelMichael.Greiner-Baer (at) dlr.deUNSPECIFIED
Deßmann, NilsNils.Dessmann (at) dlr.deUNSPECIFIED
Pfund, JohannesOptocraftUNSPECIFIED
Wienold, MartinPDIUNSPECIFIED
Schrottke, LutzPDIUNSPECIFIED
Hey, RobertPDIUNSPECIFIED
Grahn, Holger-T.PDIUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:2012
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:101
DOI :10.1063/1.4737164
Page Range:031103
Publisher:American Institute of Physics (AIP)
Status:Published
Keywords:THz, wavefront, Hartmann sensor, QCL
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 - FAMOUS 2 (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: Richter, Dr.rer.nat. Heiko
Deposited On:06 Dec 2012 08:48
Last Modified:08 Mar 2018 18:52

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