Increased depth of focus in random-phase-free holographic projection
Michał Makowski , Tomoyoshi Shimobaba , Tomoyoshi Ito
Abstract
The recently proposed random-phase-free method enables holographic reconstructions with very low noise, which allows fine projections without time integration of sub-holograms. Here, we describe the additional advantage of this method, namely, the extended depth of sharp imaging. It can be attributed to a lower effective aperture of the hologram section forming a given image point at the projection screen. We experimentally compare the depth of focus and imaging resolution for various defocusing parameters in the cases of the random-phase method and the random-phase-free method. Moreover, we discuss the influence of the effective aperture in the presence of local obstacles in the hologram's plane.Author | |
Journal series | Chinese Optics Letters, ISSN 1671-7694, (A 20 pkt) |
Issue year | 2016 |
Vol | 14 |
No | 12 |
ASJC Classification | ; ; |
DOI | DOI:10.3788/COL201614.120901 |
Language | en angielski |
Score (nominal) | 20 |
Score | = 20.0, 05-09-2019, ArticleFromJournal = 20.0, 05-09-2019, ArticleFromJournal |
Publication indicators | = 4; : 2016 = 0.759; : 2016 = 1.859 (2) - 2016=1.149 (5) |
Citation count* |
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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