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Journal Articles Review of Scientific Instruments Year : 2022

Air-photonics terahertz platform with versatile micro-controller based interface and data acquisition

Abstract

We present a recently developed terahertz platform. An air plasma produced by an ultrashort two-color laser pulse serves as a broadband terahertz source, with electric field that has peak amplitude in the MV/cm range. Air biased coherent detection of the terahertz field is employed where a peak detector associated with a micro-controller board acquires the signal coming from an avalanche photodiode. The temporal and spectral profiles of the produced terahertz electric field are presented, in excellent agreement with numerical simulations of the whole setup. We illustrate the capabilities of this platform by performing spectroscopy on water vapor and of a polystyrene reference sample.
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Dates and versions

hal-03494880 , version 1 (20-12-2021)

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E. Prost, V. Loriot, Eric Constant, I. Compagnon, L. Bergé, et al.. Air-photonics terahertz platform with versatile micro-controller based interface and data acquisition. Review of Scientific Instruments, 2022, 93, pp.033004. ⟨10.1063/5.0082593⟩. ⟨hal-03494880⟩
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