Optical imaging system employing vortex fiber for multiple-mode illumination
US10827911B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 5, 2017 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Jun 5, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/58
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A vortex optical fiber for use in an illumination subsystem of an optical imaging system (e.g., a stimulated emission depletion (STED) microscopy system) includes an elongated optically transmissive medium having a set of regions including a core region, a trench region surrounding the core region, a ring region surrounding the trench region, and a cladding region, the set of regions having a doping profile providing a Δneff for vector modes in an LP11 mode group of greater than 1×10−4 in the visible spectral range so as to simultaneously guide stable Gaussian and orbital angular momentum (OAM) carrying modes at corresponding visible wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.