arXiv subjects

Eleonora Rubino

Publications and source records attributed to Eleonora Rubino.

2 recordsLinked to original sources

arXiv2013

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

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.

physics.optics↗

arXiv2012

Counter-propagating frequency mixing with Terahertz waves in diamond

Frequency conversion by means of Kerr-nonlinearity is one of the most common and exploited nonlinear optical processes in the UV, visible, IR and Mid-IR spectral regions. Here we show that wave mixing of an optical field and a Terahertz wave can be achieved in diamond, resulting in the frequency conversion of the THz radiation either by sum- or difference-frequency generation. In the latter case, we show that this process is phase-matched and most efficient in a counter-propagating geometry.

physics.optics↗