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Applied Physics Letters / Volume 70 / Issue 14

Appl. Phys. Lett. 70, 1784 (1997); http://dx.doi.org/10.1063/1.118691 (3 pages)

7 terahertz broadband GaP electro-optic sensor

Q. Wu and X.-C. Zhang

Physics Department, Rensselaer Polytechnic Institute, Troy, New York 12180-3590

(Received 10 December 1996; accepted 31 January 1997)

We report a broadband coherent terahertz detection system using GaP as a free-space electro-optic field sensor with a demonstrated 3 dB bandwidth of 3.6 THz, useful bandwidth of 7 THz, and a pulse width of 185 fs. These figures represent new records in the coherent detection of free-space THz radiation. Sensor response as a function of crystal thickness and copropagation velocity mismatch dispersion in the THz regime is studied. © 1997 American Institute of Physics.

© 1997 American Institute of Physics

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KEYWORDS and PACS

Keywords

gallium compounds, III-V semiconductors, submillimetre wave detectors, electro-optical devices, optical sensors

PACS

  • 07.57.Kp

    Bolometers; infrared, submillimeter wave, microwave, and radiowave receivers and detectors

  • 07.07.Df

    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.118691

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

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