STU-GTIIT光学论坛（No.33）
报告地点：at lecture hall E310 in the north campus of GTIIT
报告时间：2024年12月17日 17:00
报告题目: Perturbative and non-perturbative light-matter interaction involving spatially structured light beams（全英）
报 告 人：Bikash Kumar Das(GTIIT, Shantou 515063, China & Technion, Haifa 3200003, Israel)
报告摘要:
In this talk, I will present our recent works on both nonlinear perturbative [1] (specifically on second harmonic generation) and non-perturbative processes driven by spatially structured light beams. In particular, I will discuss how the utilization of the perfect optical vortex (POV) beams as a pump can remove some of the constraints imposed on the gas-phase high harmonic generation (HHG) driven by Laguerre-Gaussian (LG) vortex beams [2]. Later, I will discuss how we extended our theoretical model from the gas-phase HHG to the solid-state HHG realm to describe the formation of high harmonic vortices from ZnO [3], and the possibility of generating a twisted attosecond pulse train [4].
1. B. Kumar Das, M. Krüger, and M. F. Ciappina, “Second Harmonic Generation in KTP Crystal Driven by Vortex Beams with Integer Topological Charges,” SPIE Proceedings (2024) (in press).
2. Das, B. K., C. Granados, M. Krüger and M. F. Ciappina, “High-Order Harmonic Generation Driven by Perfect Optical Vortex Beams: Exploring the Orbital Angular Momentum Upscaling Law,” Phys. Rev. Res. (2024) (in press), arXiv preprint arXiv:2409.19591, 2024 3. C. Granados, B. Kumar Das and M.F. Ciappina. “Orbital Angular Momentum Beam assisted High-Order Harmonic Generation in Semiconductor Materials,” Submitted to Optics Express (under review) arXiv preprint arXiv:2404.10293, 2024
4. C. Granados, B. Kumar Das, C. Heide, S.Ghimire and M. F. Ciappina, “Attosecond vortices in semiconductor materials,” Communications Physics (under review) arXiv preprint arXiv:2410.14385, 2024
欢迎全校师生参加！
理学院
2024年12月17日
