Reflective spiral phase plate, and apparatus for generating Laguerre Gaussian beam comprising same
US11947104B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Sep 9, 2020 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Jun 8, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A spiral phase plate, according to one embodiment, for generating a Laguerre Gaussian beam by reflecting an incident beam emitted from a light source, may comprise: a first quadrant area in which the step height increase rate per unit angle decreases progressively in one direction from the point with the lowest step height to the point with the highest step height; and a second quadrant area in which the step height increase rate per unit angle increases progressively in the one direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.