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Proceedings Paper

Continuous-wave THz generation through photomixing using a dual-frequency Yb3+:KGd(WO4)2 laser
Author(s): Romain Czarny; Medhi Alouini; Christian Larat; Sukhdeep Dhillon; Michel M. Krakowski; Shailendra Bansropun; Valentin Ortiz; Carlo Sirtori; Bruno Gerard; Daniel Dolfi
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Paper Abstract

We demonstrate a high-spectral-purity continuous-wave terahertz source, using a diode pumped Yb3+:KGd(WO4)2 dual frequency laser. THz radiation is generated by photomixing the two frequencies in a low temperature grown In:25Ga:75As photoconductor loading a dipole antenna. The frequency difference between the two optical modes is tuneable by step from d.c. to 3.1 THz. A maximum optical output power of 120 mW CW has been obtained with a beatnote-linewidth narrower than 30 kHz. Preliminary measurements show a tunable THz emission with a maximum output power in the order of a few tens of nW.

Paper Details

Date Published: 8 December 2004
PDF: 10 pages
Proc. SPIE 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology, (8 December 2004); doi: 10.1117/12.581285
Show Author Affiliations
Romain Czarny, Thales Research and Technology (France)
Medhi Alouini, Thales Research and Technology (France)
Christian Larat, Thales Research and Technology (France)
Sukhdeep Dhillon, Thales Research and Technology (France)
Univ. Paris 7 (France)
Michel M. Krakowski, Thales Research and Technology (France)
Shailendra Bansropun, Thales Research and Technology (France)
Valentin Ortiz, Thales Research and Technology (France)
Carlo Sirtori, Thales Research and Technology (France)
Univ. Paris 7 (France)
Bruno Gerard, Thales Research and Technology (France)
Daniel Dolfi, Thales Research and Technology (France)

Published in SPIE Proceedings Vol. 5619:
Passive Millimetre-Wave and Terahertz Imaging and Technology
Roger Appleby; J. Martyn Chamberlain; Keith A. Krapels, Editor(s)

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