Saturday, November 8, 2014

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


http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-22-6482
Roman J. B. Dietz, Nico Vieweg, Thomas Puppe, Armin Zach, Björn Globisch, Thorsten Göbel, Patrick Leisching, and Martin Schell  »View Author Affiliations

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.
© 2014 Optical Society of America

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