TY - JOUR
T1 - High-aperture raster holography for particle imaging
AU - Zimin, Valery
AU - Hussain, Fazle
N1 - Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 1994/8
Y1 - 1994/8
N2 - A novel approach to in-line particle holography is described, and its superiority is experimentally demonstrated. During recording, a raster diffuser is used to increase the effective angular aperture of particle scattering, and a raster screen is placed in front of hologram to mask the unscattered diffuse light. In reconstruction, a new type of spatial filter passes only the spherical waves from the interrogation region, effectively blocking the reconstruction beam, separating the real and virtual images, and suppressing the strong forward scattering. This new scheme provides particle images with higher contrast, reduced speckle noise, and a smaller depth of focus than conventional in-line holography.
AB - A novel approach to in-line particle holography is described, and its superiority is experimentally demonstrated. During recording, a raster diffuser is used to increase the effective angular aperture of particle scattering, and a raster screen is placed in front of hologram to mask the unscattered diffuse light. In reconstruction, a new type of spatial filter passes only the spherical waves from the interrogation region, effectively blocking the reconstruction beam, separating the real and virtual images, and suppressing the strong forward scattering. This new scheme provides particle images with higher contrast, reduced speckle noise, and a smaller depth of focus than conventional in-line holography.
UR - http://www.scopus.com/inward/record.url?scp=0028494338&partnerID=8YFLogxK
U2 - 10.1364/OL.19.001158
DO - 10.1364/OL.19.001158
M3 - Article
AN - SCOPUS:0028494338
VL - 19
SP - 1158
EP - 1160
JO - Optics Letters
JF - Optics Letters
SN - 0146-9592
IS - 15
ER -