[11a-C213-1~12] 3.5 Ultrashort-pulse and high-intensity lasers

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[11a-C213-7] Effect of Electrode Geometry on Stabilization of Sub-Cycle Mid-Infrared Pulse Generation via Filamentation

〇(M2)Shuto Nakamura¹, Neil Irvin Cabello¹, Yue Zhao², Takao Fuji¹ (1.Toyota Tech. Inst., 2.Muroran Inst. Tech.)

Keywords:

Filamentation,Sub-cycle pulse,Mid-Infrared spectroscopy

We systematically investigated the effect of electrode geometry on the stabilization of sub-cycle mid-infrared (MIR) pulses generated via filamentation. Comparing Rogowski and needle electrodes, both reduced instability to ~1% at high voltage, while only the needle electrode improved stability beyond the no-electrode baseline at 0 kV. This indicates that electrode geometry itself contributes to stabilization independent of the applied electric field. Results are presented alongside electric field simulations toward optimal electrode design.