Assessing the impact of spatial coherence on the sinusoidal linear Fresnel zone plate’s depth of focus
Maryam Farahiyan, Rasoul Aalipour · 2024
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Description
Farahiyan and Aalipour study in 2024 how the coherence of a light beam changes the depth of sharp focus of a striped zone plate. Such plates focus light for imaging, trapping, and medical tools. They made a partly even beam from a laser by passing it through a spinning diffuser.
By changing the beam spot on the diffuser, they tuned how even the beam was. As the beam grew less even, the plate held focus over a deeper range. Tests matched the math well. They also tied the lab dial used to set coherence to the width used in theory, which helps others repeat and apply the work.
Catalog record
| CREATOR | Maryam Farahiyan, Rasoul Aalipour |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 19 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |