[11p-C213-1~9] 3.5 Ultrashort-pulse and high-intensity lasers

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[11p-C213-1] Construction of a High-Harmonic Soft X-ray Spectroscopy System and Evaluation of the Transmission Properties of Thin-Film Samples

〇Soudai Sakoda¹, Takahashi Ryunosuke¹, Ishii Nobuhisa², Wadati Hiroki¹ (1.Univ. of Hyogo, 2.QST KPSI)

Keywords:

HHG

Multiple magnetic-element thin films exhibit complex photoinduced spin dynamics, requiring element-specific observation techniques for their elucidation. In this study, we constructed a soft X-ray source based on high-harmonic generation (HHG) and measured the transmittance of Si₃N₄, Mg, and transition-metal thin films. As a result, we successfully generated HHG radiation with photon energies reaching 71 eV. This energy range covers the M absorption edges of transition metals, demonstrating the feasibility of element-selective transmission spectroscopy using the developed HHG source.