8 December 2004 Continuous-wave THz generation through photomixing using a dual-frequency Yb3+:KGd(WO4)2 laser
Author Affiliations +
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.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Romain Czarny, Romain Czarny, Medhi Alouini, Medhi Alouini, Christian Larat, Christian Larat, Sukhdeep Dhillon, Sukhdeep Dhillon, Michel M. Krakowski, Michel M. Krakowski, Shailendra Bansropun, Shailendra Bansropun, Valentin Ortiz, Valentin Ortiz, Carlo Sirtori, Carlo Sirtori, Bruno Gerard, Bruno Gerard, Daniel Dolfi, Daniel Dolfi, } "Continuous-wave THz generation through photomixing using a dual-frequency Yb3+:KGd(WO4)2 laser", Proc. SPIE 5619, Passive Millimetre-Wave and Terahertz Imaging and Technology, (8 December 2004); doi: 10.1117/12.581285; https://doi.org/10.1117/12.581285

Back to Top