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Recent content by kecked

  1. kecked

    I’m gone at least for awhile I’m tired of this. I try to help and get shit on. I’ll be back...

    I’m gone at least for awhile I’m tired of this. I try to help and get shit on. I’ll be back but not right now
  2. kecked

    I wanna make tonic water fluoresce with a laser pointer.

    my intensions were purely good. You have now right to judge my heart. Just read my posts. Anyway I wish you well but you reminded me I need to go and do other things. So hey best luck to you and maybe I’ll see you down the road. The idea of the led was to get shorter wavelengths that give a...
  3. kecked

    PBS beam combining two NUBM38s

    I had thought that the best way to get max power in the spot. The WP was because someone asked about combining two arrays. This allows you to overlay the two arrays in a pbs cube without having the beams in an x. Think I cross posted.
  4. kecked

    PBS beam combining two NUBM38s

    Nope only used them for single beam combining. Yea almost sounds like you need to fiber launch every diode and then combine. Not worth it. Might as well get your own chips and align an$ bond them yourself. What a pain. Biggest WP I got was 1” and I got them from a guy named bridge on pl...
  5. kecked

    Playing with gang lens of PLPM4L MDP chip

    You’ve got my interest in trying a knife edge of all rows. Are the beams precise in orientation to each other. Ie well spaced and parallel? Want to see if a single mirror on an angle could knife edge all the rows into four beams. Now it’s just two pbs cubes and one final knife edge to get a...
  6. kecked

    PBS beam combining two NUBM38s

    PBS the two arrays but then knife edge the resulting beams. Don’t forget to use a waveplate when combining so the combined beams profile stays the same. Interested to see your result.
  7. kecked

    can i pump a dye laser with a 532nm dpss laser?

    Try it should work. Just mean lots of power more is better
  8. kecked

    problems with air (nitrogen) laser

    Can you use razor blades? The long ones for electrodes? Might eat the edge pretty fast however. Was thinking a micrometer could move the gap precisely. Also can you use copper sheet for the electrodes over glass like a tesla coil cap? Doubt it would Break that down. Heck why not etch a...
  9. kecked

    can i pump a dye laser with a 532nm dpss laser?

    I do this in research. We use a 2W 532 BUT the pump is q switched at 80mhz. The peak power is very high. My input pulses are in the ps range and my dye outputs 2-3ps pulses with aversge power around 30mw and peaks in the kw. you can’t pump a dye with CW 532 unless it’s a lot of power. I...
  10. kecked

    PBS beam combining two NUBM38s

    Good quality broadband first surface mirrors should be fine. If it heats up up it on a heatsink. I doubt it will. if the mirror is even 95%. That is only around 5W wasted on 100W. I wonder if a single mirror on a slight angle could not knife edge a complete row. If the angle was just right...
  11. kecked

    Does anyone know where to find a cheap 473nm?

    ebay. there where hundreds about a year back. all gone now and people resell for insane prices.
  12. kecked

    PBS beam combining two NUBM38s

    those are not single diodes so you can almost combine two beams with each cube. It would be a lot of work. I’d just knife edge pairs then knife that. Then maybe pbs that but you better get your polarization right. First thing I’d try for cutting is just a lens. If the spot size can get...
  13. kecked

    Does anyone know where to find a cheap 473nm?

    Also the output and beam on those I got was not great. Buy Phillips diodes
  14. kecked

    Does anyone know where to find a cheap 473nm?

    I hope you didn’t pay 500.00 for them. We bought a bunch for 30.00. I gave mine away except for one
  15. kecked

    does anyone know where to get a 575 or 561nm dpss laser module (has to be small enough to fit in a pointer, and any power is fine starting from 1mw)

    I figured too good to be true. OPSL is the only game. Wish someone made those mini OPSL like the greens that were around a while back but in 577nm. I only want 100mw.




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