3 papers
physics.optics2026
Phase-edge imaging using q-plate shifts for faster and simpler microscopy
Jigme Zangpo, Hirokazu Kobayashi, Ryo Yasuhara
We present a simplified method for isolating the edges of a phase object from the edges of an amplitude object using a 4f system with an off-axis q-plate. Instead of the four off-a…
physics.optics2025
Single-pixel edge enhancement of object via convolutional filtering with localized vortex phase
Jigme Zangpo, Hirokazu Kobayashi
Microscopy is an essential tool in imaging research, and the edge-enhanced microscope by using the vortex filter is of particular interest as an optical information processing that…
physics.plasm-ph2024
Competition of magnetic reconnections in self-generated and external magnetic fields
K. Sakai, T. Y. Huang, N. Khasanah +13
We investigate the competition of magnetic reconnections in self-generated and external magnetic fields in laser-produced plasmas. The temporal evolution of plasma structures measu…