Twin Beam = Twin Garbage....Heading off into the Wild Blue Yonder....like the eyesight alignment of " Igor " in Young Frakenstein !!!....Errrr
" What Hump " ?????
That is from the same Australian seller who had the 565nm and 575nm lasers that were overpriced. All his diodes look to be way overpriced to me too. He wants $90.00 for a used M140 diode plus shipping.
If you look at how that dual beam diode is made it has 2 emitting regions in 1 chip, so it's basically a very wide beam with bad divergence with a big center section missing, that's why they spread, it's the 2 edges of what should be a very wide beam.