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All fiber-coupled THz-TDS system with kHz measurement rate based on electronically controlled optical sampling

 
: Dietz, R.J.B.; Vieweg, N.; Puppe, T.; Zach, A.; Globisch, B.; Göbel, T.; Leisching, P.; Schell, M.

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Optics Letters 39 (2014), No.22, pp.6482-6485
ISSN: 0146-9592
English
Journal Article
Fraunhofer HHI ()

Abstract
We demonstrate a completely fiber-coupled terahertz (THz) time-domain spectrometer (TDS) system based on electronically controlled optical sampling with two erbium-doped femtosecond fiber lasers at a central wavelength of 1560 nm. The system employs optimized InGaAs/InAlAs photoconductive antennas for THz generation and detection. With this system, we achieve measurement rates of up to 8 kHz and up to 180 ps scan range. We further achieve 2 THz spectral bandwidth and a dynamic range of 76 dB at only 500 ms measurement time.

: http://publica.fraunhofer.de/documents/N-351735.html