[17p-W9_326-1~16] 3.5 Ultrashort-pulse and high-intensity lasers

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[17p-W9_326-1] [The 59th Young Scientist Presentation Award Speech] Generation of high-intensity broadband linearly polarized multi-terahertz pulses for waveform shaping

〇Kotaro Ogawa¹, Natsuki Kanda^1,2, Yuta Murotani¹, Nobuhisa Ishii³, Ryusuke Matsunaga¹ (1.ISSP The Univ. of Tokyo., 2.RAP, RIKEN, 3.QST KPSI)

Keywords:

multi-terahertz,pulse compression,polarization control

Multi-terahertz light (10–70 THz) enables the application of intense electric fields to solids while avoiding electronic excitation, making it a powerful tool for controlling topology of solids. Using pulse compression tequnique based on a hollow-core fiber, we realized stable near-infrared ultrashort pulses with a duration of 7.2 fs and an energy of 0.73 mJ. These pulses were employed to generate broadband and high-intensity multi-terahertz pulses covering 10–70 THz with a peak electric field of approximately 4 MV/cm. Furthermore, extending this source to vectorial waveform shaping including polarization control is expected to open new avenues for manipulating low-energy phenomena in solids.