Ultra-broadband all-optical sampling of optical waveforms.

Zimin, Dmitry A; Yakovlev, Vladislav S; Karpowicz, Nicholas · Sci Adv · 2022

basic_science · Level V

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Abstract

Optical-field sampling techniques provide direct access to the electric field of visible and near-infrared light. The existing methods achieve the necessary bandwidth using highly nonlinear light-matter interaction that involves ionization of atoms or generation of charge carriers in solids. We demonstrate an alternative, all-optical approach for measuring electric fields of broadband laser pulses, which offers an advantage in terms of sensitivity and signal-to-noise ratio and extends the detection bandwidth of optical methods to the petahertzdomain.