Super-Oscillating Diffractive Optical Spot Generators
Abstract
:1. Introduction
2. PDFT-Based Design of Super-Oscillating DOEs
2.1. Optical System Model
2.2. The PDFT Algorithm in Cylindrical Coordinates
3. Examples of Super-Oscillating Filter Functions
3.1. Regularized PDFT Design
3.2. Side-Lobe Suppression
3.3. Superresolved Ring
4. Phase-Only Encoding of PDFT Designs
5. Super-Resolving Spot-Generators
5.1. Spot Generator DOE Design
5.1.1. PDFT Design
5.1.2. Non-Linear Design
5.2. Numerical Characterization of Spot Generator Designs
5.3. Fabrication of Diffractive Optical Spot Generators
6. Experimental Characterization of the DOE Response
7. Discussion and Summary
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
DOE | Diffractive optical element |
PDFT | Prior discrete Fourier transform |
PSF | Point spread function |
FS | Fused silica |
Al | Aluminum metal |
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Testorf, M.E.; Gadamsetti, P.; Batoni, P.; Poutous, M.K. Super-Oscillating Diffractive Optical Spot Generators. Photonics 2024, 11, 790. https://doi.org/10.3390/photonics11090790
Testorf ME, Gadamsetti P, Batoni P, Poutous MK. Super-Oscillating Diffractive Optical Spot Generators. Photonics. 2024; 11(9):790. https://doi.org/10.3390/photonics11090790
Chicago/Turabian StyleTestorf, Markus E., Praneeth Gadamsetti, Paolo Batoni, and Menelaos K. Poutous. 2024. "Super-Oscillating Diffractive Optical Spot Generators" Photonics 11, no. 9: 790. https://doi.org/10.3390/photonics11090790