Recent content by ModeHopper

Fiber-Coupled Blue Direct Diode Laser BLUE IMPACT series HK-5650 (BLUE Semiconductor Laser Module) : SHIMADZU CORPORATION This one is listed as 10W from a 100um multimode core diameter - but the paper cited above describes 20W from a 200um core. It seems the application is copper and gold...

Well, it turns out, it is definitely possible. Shimadzu has a line of products that start with a collimated array of blue diodes (3x3 in this case) and use a simple lens to go into small multimode fibers - One such unit outputs 20W CW from a 200um multimode fiber core.

Yeah, fiber lasers and ring lasers are cool. I don't know of any standard fiber lasers that are pumped at these wavelengths but wouldn't be surprised if there are several. As stated, I am mainly trying to get into the fiber for convenience of moving the beam to difficult (and variable)...

That may be correct, I certainly haven't seen a KE that fits the blocks, either in teardown photos or for sale. A reasonable-sized planoconvex lens (~90mm dia) should be able to place a set of parallel beams into a decent launch area without too much fuss. Not every large fiber is rated for...

Makes sense relative to all the hookup diagrams I have seen with the U-shaped PCB and serial power connection. I can see the index notches on the bases of the diodes also appear to confirm this. Does anyone have a clue what the nominal inner machine distance is, or what the next element is...

I have come across the DTR webshop linked above, but it says the knife edge arrays are out of stock, and I do think they are for different array blocks. Does anyone have a diagram (or description) of the alignment of the linear diode output(s) and their orientation relative to the 4x2 array...

Thanks for the info and for the beam patterns. As stated, this is for a high power projector - I am not necessarily interested in best collimation performance (for a spotlight or pointer application). Fiber coupling may not be workable even with a large core, I was just going for some routing...

I have a set of two NUBM08 arrays (4x2 diodes each) that I would like to use as a source for a high power projector application (in a full enclosure, of course). From my reading, each diode laser array should produce a set of highly-parallel nearly collimated beams. I know these laser diode...