Gauging diffraction patterns: field of view and bandwidth estimation in lensless holography
Abstract
The purpose of this work is to provide theoretically grounded assessment on both the field-of-view and the bandwidth of a lensless holographic setup. Indeed, while previous works have presented results with super-resolution and field-of-view extrapolation, there is no well established rules to determine them. We show that the theoretical field of view can be hugely large with a spatial-frequency bandwidth only limited by the wavelength leading to an unthinkable number of degrees of freedom. To keep a realistic field of view and bandwidth, we propose several practical bounds based on few setup properties: namely the noise level and the spatio-temporal coherence of the source.
- Publication:
-
Applied Optics
- Pub Date:
- April 2021
- DOI:
- 10.1364/AO.414976
- arXiv:
- arXiv:2103.11649
- Bibcode:
- 2021ApOpt..60B..38S
- Keywords:
-
- Electrical Engineering and Systems Science - Signal Processing;
- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- Applied optics, Optical Society of America, 2021, 60 (10), pp.B38