I am looking for a source for either large core multimode fibers or large core fiber bundles capable of handling 100mJ pulsed energy (5ns pulse width) @30Hz in the near infrared @1600nm.
The best fiber I can find so far is a multimode fiber with a damage threshold of 1GW/cm^2 and a 1 micron core size. If my math is correct then at this fiber size a damage threshold of at least 2.5GW/cm^2 is needed.
there are a few options1) Find a supplier with 1.5 - 2 um fiber cores with high damage thresholds. (not the best option because we are hoping for a reasonalbe amount of flexibilty in the fiber)
2) Find a smaller core fiber cable with an extremely high damage threshold.3) Find a 2-3mm fiber bundle that can handle this amount of power without destorying the epoxy resin used in the bundle.
Is there anyone out there that can recommend a solution to this problem? Perhaps a company that specializes in high power applications, or a certain type of fiber to consider? I have been unable to find one thus far.