A traveling-wave THz photomixer based on angle-tuned phase matching
- 10 May 1999
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 74 (19), 2872-2874
- https://doi.org/10.1063/1.124042
Abstract
A traveling-wave THz photomixer based on a free-space optical-THz phase-matching scheme is proposed. A dc-biased coplanar strip line fabricated on low-temperature-grown GaAs serves as the active area of the device, and is illuminated by two noncollinear laser beams which generate interference fringes that are accompanied by THz waves. The device with the laser-power-handling capability over 300 mW and a 3-dB bandwidth of 1.8 THz was experimentally demonstrated. The results show that traveling-wave photomixers have the potential to surpass small-area designs.Keywords
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