Single and multi-stage high power optical isolators using a single polarizing element
US12181738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2023 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | May 22, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical isolator for generally collimated laser radiation includes a single polarizing element, at least one Faraday optical element, at least one reciprocal polarization altering optical element disposed at the single polarizing element, at least one reflective optical element for reflecting radiation to provide an even number of passes through the at least one Faraday optical element, and a magnetic structure. The magnetic structure is capable of generating a magnetic field within the at least one Faraday optical element that is generally aligned with the even number of passes along a beam propagation axis. The optical isolator is configured to receive generally collimated laser radiation, which passes through the single polarizing element and the at least one reciprocal polarization altering optical element and which makes at least two passes through the at least one Faraday optical element, whereby generally collimated laser radiation is output from the optical isolator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.