Patent · US Active

High power single mode fiber laser

US10951000B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

IPG PHOTONICS CORPORATION · US

Inventors

Anton Ferin · Burbach, DE
Valentin Fomin · Münster, DE
Andrey Abramov · Foster City, US

Key dates

Filing date	Sep 20, 2016
Grant date	Mar 16, 2021
Priority date	—
Expiry date	Jul 20, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/0604
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A single mode (SM) high power laser system is configured with a laser source outputting a single mode or low mode kW-power light and a passive delivery fiber spliced to an output fiber of the fiber laser source and having a double bottleneck-shaped core. The latter is configured to increase a threshold for nonlinear effects in general and in particular for stimulated Raman scattering (SRS) so that the delivery passive fiber has a fiber length at least twice the length of a delivery passive fiber with a standard uniformly dimensioned core, which may be used with the same laser source, while outputting the kW-power light with an M2 factor less than 2.

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