System and method for high power diode laser wavelength spectrum narrowing
US10348057B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2018 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jan 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4062
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A high power diode laser system selects the central wavelength and narrows the spectral bandwidth by employing one or more atomic line filters (ALFs) as the wavelength selective element in the external cavity to optimize high power multi-mode operation. The high power diode laser system may include multiple diode laser sources, such as multiple diode laser bar stacks, providing multiple output beams. In an “in-line” or “straight through” configuration, a partially reflective surface terminates the external cavity to feed beam power back through the external cavity and to provide one or more output beams. In a “splitter” or “power divider” configuration, a highly reflective surface terminates the external cavity and one or more beam splitters between the diode laser source(s) and the ALF are used to provide one or more output beams. An afocal telescope may be used to image the diode laser source(s) at the reflective surface terminating the external cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.