Nonlinear imaging and 3D-mapping of terahertz fields with Kerr media

TL;DR

This paper demonstrates a method for high-resolution 3D mapping of terahertz fields using Kerr media, enabling detailed spatial and temporal analysis with standard optical equipment.

Contribution

It introduces a novel approach to perform sub-wavelength terahertz imaging and mapping through four-wave mixing in large band-gap dielectrics like diamond.

Findings

Achieved sub-wavelength THz resolution in beam profiling.

Enabled space-time resolved mapping of terahertz fields.

Utilized standard CCD cameras for optical signal recording.

Abstract

We investigate the spatially and temporally resolved four-wave mixing of terahertz fields and optical pulses in large band-gap dielectrics, such as diamond. We show that it is possible to perform beam profiling and space-time resolved mapping of terahertz fields with sub-wavelength THz resolution by encoding the spatial information into an optical signal, which can then be recorded by a standard CCD camera.