Coherent amplification using phase modulation mediated two-beam coupling
US10079465B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2017 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Aug 3, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2332
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A coherent amplification device includes a phase modulation stage for preconditioning a laser beam, and a coupling stage for transferring energy and spatial phase information between the first laser beam and a second laser beam. The phase modulation stage may include an electro-optically active medium having a time-dependent refractive index manipulatable by an electric field thereby introducing a time-dependent phase shift to the first laser beam when passed therethrough. The coupling stage may include a coupling medium having a time-dependent and intensity-dependent refractive index with a finite lifetime, where an interference pattern of the laser beams is written into the coupling medium through the time-dependent and intensity-dependent refractive index to generate a holographic grating based on the interference pattern, and where the finite lifetime of the coupling medium and the preconditioned phase modulation facilitates a transfer of energy and spatial phase information between the laser beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.