Research Progress and Plan

1. Research Progress and Plan

Vipin Tiwari
Postdoctoral Research Fellow
Department of Applied Physics & Electronics
Umeå University (Sweden)
PR4 (July, 2025)
vipin.tiwari@umu.se

2.

Experiment-I
Real time Polarization assisted anisotropic mapping for edge enhancement using wide-field linear Mueller matrix holography
Mueller Matrix Imaging
4x4 matrix containing full polarization information of sample
Full polarization imaging (Diattenuation, retardance, anisotropy)
Require 36 recordings (time ~ 10 to 15 minutes)
Manual rotation of optical components (errors)
Absolute phase measurement is not possible
Linear Mueller matrix
3x3 matrix containing partial polarization information of sample (no circular polarization)
Full polarization imaging (Diattenuation, retardance, anisotropy)
Require 16 recordings (~5 minutes)
Absolute phase measurement is not possible
Limited field of view
Spatial resolution

3.

Experimental setup (Mueller-Stokes holography)
BS1
HWP
Laser
L2
L3
BS2
Pol-Cam
0°
45°
135°
90°
USAF
target
BE
M1
M2

4.

Methodology
Input
(i=H,P,M,V)
Record hologram using polarization
camera
Split into polarization sensitive hologram (iH, iV, iP, iM)
IFFT of each hologram
FFT of each hologram
Phase
(16)
Intensity
(16)
Quantitative Phase
Linear Mueller matrix

5.

Results
FFT
Hologram @ HH
IFFT
Intensity
phase
Reconstruction

6.

Polarization sensitive absolution phase
V
P
M
i=M
Phase (radian)
i=P
i=V
i=H
H
Spatial distance

7.

Mueller matrix and polarization sensitive anisotropy
ML =