Neural network quantifies P-integral in solids - Verve times

Researchers have recently proposed the concept of ionization integral (P-int) to quantify the strength of plasma effect. This is the first time that nonlinear effects have been quantified experimentally. Relevant results were published in Physical Review Research. By combining with the widely used B integral (B-int), the two main nonlinear effects in the spectral broadening process: Kerr effect and ionization effect, were investigated numerically and experimentally by Dr. Gao Yitan at the Institute of Physics of the Chinese Academy of Sciences, under the joint guidance of Dr. Zhao Kun and Prof. Wei Zhiyi. Observing the response of the laser field in the interaction between ultra-fast laser and matter is a powerful way to explore the ultra-fast physical mechanism in the process of interaction, especially in the strong field regime.