Increased depth of focus in random-phase-free holographic projection
Michał Makowski , Tomoyoshi Shimobaba , Tomoyoshi Ito
AbstractThe 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.
|Journal series||Chinese Optics Letters, ISSN 1671-7694|
|ASJC Classification||; ;|
|Score|| = 20.0, 01-01-2020, ArticleFromJournal|
= 20.0, 01-01-2020, ArticleFromJournal
|Publication indicators||= 4; = 6; : 2016 = 0.786; : 2016 = 1.859 (2) - 2016=1.149 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.