FAP Laser Module Columniation

[Hemlock_Mike]

I have a 40 watt - 808 nM laser module. The output is a SMA connector. the beam is highly divergent.
Has anyone found a good way to get that beam under control ? I copied an article from LPF long ago about
using a biconcave lens. I'm getting minimal results.
Mike

 

[RedCowboy]

The way the FAP modules bundle beams is not conducive to long range focusing, the fiber laser pump modules use better diodes and knife edging and the active fiber system they power have much better beam quality with the MOPA systems having excellent beam quality.

That said people have had decent short/mid range results with just the pumps and a scope/beam expander.

Fiber laser basics : which are the key components for my architecture ? Tutorial : Fiber laser basics

This tutorial provides an overview of the technical approaches most commonly used to make a fiber laser. It explains the component and architecture choices.

www.aerodiode.com

Borrislasers has recently posted his experiments with the inexpensive pumps here.

 

[Hemlock_Mike]

Thank you -- Mike

 

[Hemlock_Mike]

I looked at your info and I'm not sure mine fits. The FAP unit has 19 laser diodes in a row.
there are 19 fibers connecting these to an output connecter with 19 individual fibers.
These, with a lens, will project an image of 19 dots. Will your info work with this design?
I'll try your suggestions. One study asks about using a dcc lens...