13 citations · 17 across the 5 of their papers we have counts for
5 papers
Comparative analysis of wavenumber response in phase contrast and spiral phase imaging systems for plasma diagnostics
Jigme Zangpo, Hirokazu Kobayashi, Haruki Kawaguchi +1
Phase contrast imaging (PCI) has been used for decades to study plasma density fluctuations, but its wavenumber response is constrained by the phase plate groove width and beam…
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…
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…
Isolation of phase edges using off-axis q-plate filters
Jigme Zangpo, Hirokazu Kobayashi
Edge-enhanced microscopes with q-plate have been attracted more attention to enhance the edges of phase-amplitude objects in biological sample due to their capability for all-direc…
Edge-Enhanced Microscopy of Comlplex Object using Scalar and Vectorial Vortex Filtering
Jigme Zangpo, Tomohiro Kawabe, Hirokazu Kobayashi
Recently, system containing a q-plate has been used to perform edge detection and enhancement of amplitude and phase objects. However, only few studies have concentrated on ed…