Agreement No: lzp-2020/2-0238

Duration: 2020 – 2021 (13 month)

Project Leader: Institute of Solid state physics, University of Latvia , Dr. phys. Mārtiņš Rutkis

Project partners:

Total budget: 100 389.00 EUR

ISSP UL budget:  100 389.00 EUR

Project description:

In last year’s third-order nonlinear optical (NLO) materials have seen a new rise in interest due to the development of various soliton microresonators for microwave applications, telecommunication, and sensors in the visible range as well as quantum photonics. In all of these technologies materials with a strong Kerr effect plays a key role. Although there are plenty of published papers about Kerr effect estimation, the measurement methodology various significantly making it difficult to use them for material comparison. The main issue from the material characterization part is that there has not been established a defined Kerr spectroscopy method that could be used as a standard for third-order NLO measurements. could play a significant role in a more fundamental explanation of observed effects.

The tasks of ISSP UL:

During this project, we will develop a Time and Polarization Resolve (TPR) Kerr Spectroscopy. This will incorporate Z-scan and Beam-deflection methods to study the real (Kerr effect itself) and imaginary (Two-photon absorption) parts of the Kerr effect. An essential focus will be given to distinguishing between thermo-optical and Kerr effects, separating the Kerr effect into fast electronic response, and slower molecular effects and evaluation of relaxation time for each effect. Measurements will be carried out for various organic compounds. Additionally experimental results will be used for verification of Quantum Chemical calculations (QQC). QCC