Patent · US Active

Fiber laser system

US7848368B2 · kind B2 · utility

37Cited by

2References

14Claims

0Family size

Assignee

IPG PHOTONICS CORPORATION · US

Inventors

Valentin Gapontsev · Worcester, US
Valentin Fomin · Münster, DE
Nicholai Platonov · Worcester, US

Key dates

Filing date	Mar 26, 2009
Grant date	Dec 7, 2010
Priority date	—
Expiry date	Jun 11, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/1618
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A powerful fiber laser system is configured with at least one large-area multi-clad rare-earth doped fiber, which is configured with a MM core capable of propagating a single mode laser emission at a first wavelength, and with at least one pumping assembly capable of generating an optical pump output at a wavelength shorter than the first wavelength of the rare-earth doped fiber. The pumping assembly has a plurality SM fiber lasers coupled to a SM-MM combiner which is operative to lunch the pump output into the cladding of the rare-earth doped fiber so that the powerful fiber laser system is operative to deliver a power of up to 20 kW.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.