This year, Kapteos will be present at ICOPS 2018 in Denver from the 25th of June until the 28th of June 2018.

A technical paper will be presented the 28th in the morning: Electro-optical probe for dielectric barrier discharge analysis.

Abstract: The dielectric barrier discharges (DBD) were first used by Siemens in 1857 to produce ozone out of oxygen. DBD’s are nowadays exploited over a wide range of applications, including ozone generation, pollution control, surface treatment or plasma displays. As DBD’s are electrical discharges occurring between two insulated electrodes, the associated electric (E) field is a key parameter to be analysed. For that purpose, we have developed a fully dielectric and millimeter sized optical probe based on the Pockels effect, also called electro-optic (EO) effect. This pig-tailed probe  involves a non-centro-symmetric crystal (BSO), which sees its eigen refractive indices linearly modified by the E-field. The transduction is vectorial meaning that each eigen component of the E-field vector can be measured in real time. The intrinsic bandwidth of the probe covers more than 8 decades of frequency from 30 Hz up to several GHz. The achievable dynamic range of the E-field measurement exceeds 130 dB, with a minimum measurable field lower than 1 V/m and a compression point greater than 1 MV/m. The spatial resolution of the EO probe is weaker than 1 mm³.
We here propose to demonstrate…

In parallel to this, we will show our system to perform E-field measurements on a plasma ball (this is a unique and funny demo) that reinforces the fact that our probes do not impact the measured E-field.