Structured beam generation device and method based on beam shaping
US11418012B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2019 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Jan 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/58
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A structured beam generation device based on beam shaping and a method adopting the device are provided. Linearly polarized beam emitted by a laser sequentially passes through an electro-optic intensity modulator, a half-wave plate, and a first beam expander, and then enters a first polarization beam-splitting prism to be transmitted and reflected. The transmitted beam sequentially passes through a beam shaper, an optical delay line, and a first reflector to form a parallel ring-shaped beam to be transmitted by a second polarization beam-splitting prism. The reflected beam sequentially passes through an electro-optic phase modulator, a second reflecting mirror, and a second beam expander, and is then reflected by the second polarization beam-splitting prism and combined with the transmitted beam into a beam, which is then adjusted by a polarizing plate have consistent polarization direction, and is finally focused at a focal plane by a focusing lens for interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.