Compact and low-cost THz QTDS system

Compact and low-cost THz QTDS system

We present a terahertz quasi time domain spectroscopy (QTDS) system setup which is improved regarding cost and compactness. The diode laser is mounted directly onto the optical delay line, making the optical setup more compact. The system is operated using a Raspberry Pi and an additional sound card...

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Veröffentlicht in:Optics express 2015-08, Vol.23 (17), p.21972-21982
Hauptverfasser: Probst, Thorsten, Rehn, Arno, Koch, Martin
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container_issue 17
container_start_page 21972
container_title Optics express
container_volume 23
creator Probst, Thorsten
Rehn, Arno
Koch, Martin
description We present a terahertz quasi time domain spectroscopy (QTDS) system setup which is improved regarding cost and compactness. The diode laser is mounted directly onto the optical delay line, making the optical setup more compact. The system is operated using a Raspberry Pi and an additional sound card. This combination replaces the desktop/laptop computer, the lock-in-amplifier, the stage controller and the signal generator. We examined not only a commercially available stepper motor driven delay line, but also the repurposed internal mechanics from a DVD drive. We characterize the performance of the new system concept.
doi_str_mv 10.1364/OE.23.021972
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title Compact and low-cost THz QTDS system
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