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Traveling-Wave Photomixers Based On Noncollinear Optical/Terahertz Phase-Matching

Matsuura, Shuji and Blake, Geoffrey A. and Wyss, Rolf A. and Pearson, J. C. and Kadow, Cristoph and Jackson, Andrew W. and Gossard, Arthur C. (1999) Traveling-Wave Photomixers Based On Noncollinear Optical/Terahertz Phase-Matching. In: Proceedings of the Tenth International Symposium on Space Terahertz Technology. , pp. 38-47. ISBN 613503422

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Traveling-wave THz photomixers based on angle-tuned optical/THz phase-matching are experimentally demonstrated. A dc-biased coplanar stripline terminated by a planar antenna is fabricated on low-temperature-grown GaAs. A distributed area between the striplines is illuminated by two noncollinear laser beams which generate interference fringes accompanied by THz waves. The velocity of the optical fringe is matched to the THz-wave velocity in the stripline by tuning the incident angle of the laser beams. The device can handle the laser power over 300 mW and provides the THz output of ~0.1 µW with the 3-dB bandwidth of 2 THz. The experimental results show that traveling-wave photomixers have the potential to surpass conventional small area designs.

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Additional Information:© 1999 Associated Universities, Inc. The authors would like to thank T. E. Turner in the Microelectronics Device Laboratory at JPL for device fabrication. This research was sponsored by the Jet Propulsion Laboratory, California Institute of Technology, and the National Aeronautics and Space Administration. The work performed at UCSB was supported by the Center for Nonstoichiometric III-V Semiconductors.
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ID Code:34663
Deposited By: Tony Diaz
Deposited On:04 Oct 2012 19:27
Last Modified:27 Dec 2012 02:48

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