- Jun 20, 2015
Hello there Steve,If you want a RGB show laser with this technology phone John at Technological Artisans n New York. He is the exclusive Goldenstar dealer for this technology in the US. He doesn't sell pointers. Just show lasers.
Don't bother **** *** inc. unless you want 2500 pieces per part number. You won't get anywhere without the potential of very large sale. Well beyond what this forum could put together in an annoying (for them) group buy, and they won't sample either.
The internally FACed Ebay parts mentioned are about twice the divergence of other internally FACed high power visible diodes.
I deleted the company name; thus they will not get harassed. . DTR knows how to reach me, if he feels he can swing a 2500 part order.
I'm wondering if you can solve a question that I have about the FACed diodes from LaserTree. Back when these came out some members purchased them and had a difficult time obtaining the expected square beam profile without using a very large 100mm FL lens. What I am confused about is why that is, they seemed to be behaving as if a FACed diode needs to be given distance allowed before collimating to allow the fast axis and slow axis to reach the desired profile shape but this doesn't make sense as the fast and slow axis should already be corrected right out of the diode.
If I remember correctly the issue people were experiencing was that the axis was not corrected (still rectangular profile) unless using a long long FL lens, but this would imply that the FA and SA were diverging at different rates, in which case collimating would not change that and the SA and FA would continue to diverge at different rates after the lens. This difficulty seemed to greatly dampen the enthusiasm for these diodes.
Can you help clarify what was observed?
One last question, there was some confusion about whether to use the "line" or "square" versions of their FACed diodes. It seemed to me that the square version would result in what is accomplished otherwise by cylindrical correction lenses/prisms, leaving me wondering what the "line" versions were for? This would seem the opposite of "fast axis correction", in fact exaggerating the problem of unequal diverging fast and slow axis.