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Terahertz waveform generation for S21-parameter measurements using a fiber-coupled optical pulse shaper

: Rämer, Jan-Martin; Freymann, Georg von

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Optics Express 23 (2015), No.24, pp.30872-30877
ISSN: 1094-4087
Journal Article, Electronic Publication
Fraunhofer IPM ()
spectroscopy; terahertz; pulse shaping

A THz time-domain spectroscopy-based vector network analyzer for S21-parameter measurements is presented providing THz waveforms as input signal for waveguide-coupled devices under test. We integrate an optical pulse shaper into the emitter arm and fiber-couple the photoconductive antennas to allow for flexible usage. The pulse-shaping capabilities are demonstrated by realizing all 5 bit combinations of a 0.5 THz signal. Furthermore, we can set the center wavelength of the resulting THz spectrum. Finally, we apply the shaped THz waveforms to test the response of a low-noise amplifier.