[8p-E206-1~17] 7.1 X-ray technologies

4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-E206-12] The Observation of Ultrafast Transient Decrease Dynamics of Non-linearity on LiNbO₃ by Time Resolved Soft X-ray Second Harmonic Generation

〇Kazuhiro Miyazawa¹, XingYu Su¹, Tobias Lojewski¹, Masafumi Horio¹, Iwao Matsuda¹ (1.ISSP, UTokyo)

Keywords:

X-ray Free Electron Laser,Non-linear Optics,Second Harmonic Generation

An X-ray free-electron laser (XFEL) features ultra-high brilliance and femtosecond time-resolution. Our group performed time-resolved soft X-ray second harmonic generation(tr-SXSHG) measurements on LiNbO₃, a material that exhibits spontaneous inversion symmetry breaking, and we successfully observed the transient reduction in the second-order non-linearity induced by optical laser excitation. In this presentation, we will discuss the underlying experimental principles and setup, alongside the observed non-linear dynamics.