Air-photonics terahertz platform with versatile micro-controller based interface and data acquisition
arXiv:2112.09657 · doi:10.1063/5.0082593
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.
arXiv comment8 pages, 8 figures
References in corpus (6)
- Ultrashort filaments of light in weakly-ionized, optically-transparent media
- Spectral dynamics of THz pulses generated by two-color laser filaments in air: The role of Kerr nonlinearities and pump wavelength
- Terahertz pulse generation by two-color laser fields with circular polarization
- On the observation of field-free orientation of a symmetric top molecule by terahertz laser pulses at high temperature
- Long-lasting Molecular Orientation Induced by a Single Terahertz Pulse
- Temporal characterization of individual harmonics of an attosecond pulse train by THz streaking