Coherent addition of two dimensional array of fiber lasers

TL;DR

This paper presents configurations for coherently combining four fiber lasers in a 2D array, achieving over 85% efficiency with compact interferometric combiners suitable for inside or outside cavity placement.

Contribution

The paper introduces novel configurations and compact interferometric combiners for efficient 2D array laser beam combination, enhancing robustness and efficiency.

Findings

Over 85% combining efficiency achieved

Configurations allow insertion inside or outside the laser cavity

Compact and robust interferometric combiners developed

Abstract

Configurations for efficient free space coherent addition of four separate fiber lasers arranged in two dimensional array are presented. They include compact and robust interferometric combiners that can be inserted either inside or outside the cavity of the combined lasers system. The results reveal that over 85% combining efficiency can be obtained.