Time-domain spectroscopy (TDS) is among the most sensitive techniques used to study the properties of materials, structures and biological samples [1]. It is usually implemented using electro-optical sampling in χ(2) crystals, where the polarization state of a short probe pulse is modified by the local electric field of the radiation to be measured. Such a polarization change is measured by a balanced detector as the delay between the probe pulse and the radiation under measurement varies, allowing the electric field of the latter to be sampled in the time domain.
Quantum-enhanced time-domain sampling of THz fields
Caspani L.;Clerici M.
Ultimo
2025-01-01
Abstract
Time-domain spectroscopy (TDS) is among the most sensitive techniques used to study the properties of materials, structures and biological samples [1]. It is usually implemented using electro-optical sampling in χ(2) crystals, where the polarization state of a short probe pulse is modified by the local electric field of the radiation to be measured. Such a polarization change is measured by a balanced detector as the delay between the probe pulse and the radiation under measurement varies, allowing the electric field of the latter to be sampled in the time domain.
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