Justen, Matthias, Otani, Keita, Turcinkova, Dana, Castellano, Fabrizio, Beck, Mattias ORCID: 0000-0002-0260-5797, Graf, Urs U., Buechel, Denis, Schultz, Michael and Faist, Jerome ORCID: 0000-0003-4429-7988 (2017). Waveguide Embedding of a Double-Metal 1.9-THz Quantum Cascade Laser: Design, Manufacturing, and Results. IEEE Trans. Terahertz Sci. Technol., 7 (5). S. 609 - 614. PISCATAWAY: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. ISSN 2156-342X

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Abstract

We present the details of a coupling structure to embed a 1.9-THz double-metal quantum cascade lasers (QCLs) into a 120-mu m-wide full-height rectangular waveguide. We describe the split-block manufacturing of the waveguide coupler together with a diagonal feed horn and present power and beam shape measurements of two different devices. The two devices differ in coupling factor, which can be chosen in a wide range by the mounting position of the QCL. Our waveguide embedding allows coupling of a large fraction of the laser power into the waveguide and the subsequent horn antenna emitting with a large Gaussian mode content, enabling efficient integration into a diffraction limited optics setup. This is illustrated by a self-mixing experiment and by using the embedded QCL as a local oscillator in a heterodyne receiver.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Justen, MatthiasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Otani, KeitaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Turcinkova, DanaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Castellano, FabrizioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beck, MattiasUNSPECIFIEDorcid.org/0000-0002-0260-5797UNSPECIFIED
Graf, Urs U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Buechel, DenisUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schultz, MichaelUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Faist, JeromeUNSPECIFIEDorcid.org/0000-0003-4429-7988UNSPECIFIED
URN: urn:nbn:de:hbz:38-219712
DOI: 10.1109/TTHZ.2017.2723767
Journal or Publication Title: IEEE Trans. Terahertz Sci. Technol.
Volume: 7
Number: 5
Page Range: S. 609 - 614
Date: 2017
Publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Place of Publication: PISCATAWAY
ISSN: 2156-342X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
PHASE-LOCKING; THZMultiple languages
Engineering, Electrical & Electronic; Optics; Physics, AppliedMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/21971

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