Continuous wave THz system based on an electrically tunable monolithic dual wavelength Y-branch DBR diode laser

  • We analyse the use of a tunable dual wavelength Y-branch DBR laser diode for THz applications. The laser generates electrically tunable THz difference frequencies in the range between 100 and 300 GHz. The optical beats are tuned via current injection into a micro-resistor heater integrated on top of one of the distributed Bragg reflector (DBR) section of the diode. The laser is integrated in a homodyne THz system employing fiber coupled ion-implanted LT-GaAs log spiral antennas. The applicability of the developed system in THz spectroscopy is demonstrated by evaluating the spectral resonances of a THz filter as well as in THz metrology in thickness determination of a polyethylene sample.

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Metadaten
Author:Jared Ombiro GwaroGND, Carsten BrennerORCiDGND, Lara Sophie TheurerGND, Martin MaiwaldGND, Bernd SumpfGND, Martin HofmannGND
URN:urn:nbn:de:hbz:294-89333
DOI:https://doi.org/10.1007/s10762-020-00676-4
Parent Title (English):Journal of infrared, millimeter, and terahertz waves
Publisher:Springer
Place of publication:New York
Document Type:Article
Language:English
Date of Publication (online):2022/05/12
Date of first Publication:2020/02/15
Publishing Institution:Ruhr-Universität Bochum, Universitätsbibliothek
Tag:CW THz source; Homodyne detection; Semiconductor laser
Volume:41
First Page:568
Last Page:575
Note:
Dieser Beitrag ist auf Grund des DEAL-Springer-Vertrages frei zugänglich.
Institutes/Facilities:Lehrstuhl für Photonik und Terahertztechnologie
Dewey Decimal Classification:Technik, Medizin, angewandte Wissenschaften / Elektrotechnik, Elektronik
open_access (DINI-Set):open_access
faculties:Fakultät für Elektrotechnik und Informationstechnik
Licence (English):License LogoCreative Commons - CC BY 4.0 - Attribution 4.0 International

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