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High-power terahertz radiation from a high-repetition-rate large-aperture photoconducting antenna

✍ Scribed by G. Mouret; W. Chen; D. Boucher; R. Bocquet; P. Mounaix; D. Théron; D. Lippens

Book ID: 101273085
Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 151 KB
Volume: 17
Category: Article
ISSN: 0895-2477
DOI: 10.1002/(sici)1098-2760(199801)17:1<23::aid-mop5>3.0.co;2-l

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✦ Synopsis

While the majority of research with terahertz radiation from large-aperture antennas used high-intensity femtosecond laser pulses with low repetition rates, we used a regenerati¨e amplifier with a repetition rate up to 300 kHz. This high repetition rate allows us to combine a high-power large-aperture transmitter and dipole antenna detection.

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We demonstrate generation of continuous-wave terahertz radiation and its application to molecular spectroscopy. The radiation source is based on the photomixing of two diode laser beams in a low-temperature-grown GaAs photoconductive antenna, which offered output power of several tens of nanowatts a