Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Search results

  1. aaronnoraa

    Sharp GH04C05B9G 5W 440-450nm

    I'm not him but I'm guessing it was a trick to get .33 ohms with what was on hand and probably also happened to lower the power over each resistor enough to be in spec. Useful tools for making an LM317 or LM338 or LM350 current regulator are Current to resistance value calculator for...
  2. aaronnoraa

    Low divergence FAC corrected Red combiner modules

    Off topic but can I ask who makes those SR speakers in the warehouse photo? Those look like some seriously nice loudspeakers.
  3. aaronnoraa

    New! Sharp Diodes 1W 520nm & 5W 455nm & +2W 638nm

    Thank you so much for clarifying this. However, I do have one question Does this mean that when using the linear FAC the overall divergence will be better than when using the square FAC, but will still have a rectangular profile that is lengthwise 90 degrees to the uncorrected diode's...
  4. aaronnoraa

    Hilarious Chinese lens manufacturer name....

    I just can't get over this logo.. tell me that isn't a coiled up lawn prize! :)
  5. aaronnoraa

    My Furst Custom laser 7W+ NUBM0E

    That's a nice build and the G8 should help your beam have lower divergence than the G2 (and higher output than the 3 element). One thing though, please don't point it at buildings that have people inside them!
  6. aaronnoraa

    New! Sharp Diodes 1W 520nm & 5W 455nm & +2W 638nm

    Hello there Steve, 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...
  7. aaronnoraa

    Which is the most powerfull green laser diode on the market?

    From what I understand the NUGM04 is one of many high output terrible divergence diodes, somewhere between NUBM07 and NUBM44 terribleness, due to the size of the emitter itself. As you know, you can do several things to achieve lower divergence. The best option for output quality would be 6X...
  8. aaronnoraa

    NUGM04 525nm laser build

    Pretty sure it is, at least that I know of there's nothing else that has a rating from the horse's mouth that matches or exceeds 1.35W @1.9A operating current and 1.6W (extrapolated from operating current output) at the 2.3A Absolute Maximum.
  9. aaronnoraa

    NUGM04 525nm laser build

    Using a G8 lens will help a bit with the horrible divergence and you may see a little higher output power as well. Another option is to leave the ball lens in place and use a 6X expansion C-lens pair in front of it to 'circularize' (in reality 'squareularize' :0) the output for much lower...
  10. aaronnoraa

    Which is the most powerfull green laser diode on the market?

    To answer your question ("Which is the most powerfull [SIC] green laser diode on the market"), unless I'm mistaken the most powerful green diode is the NUGM04... rated at 1.35W @1.9A (rated operating current) and 1.6W (typical)@2.3A (rated Absolute Maximum current). I'm a little bit surprised...
  11. aaronnoraa

    Hilarious Chinese lens manufacturer name....

    I think it's a bad translation, of which they named their company. Their logo doesn't help, either! Other lenses aren't squat.
  12. aaronnoraa

    Sharp GH04C05B9G 5W 440-450nm

    I am as well, I'm thinking about asking Laser Tree if they have considered recanning the NUBM0C's.
  13. aaronnoraa

    NUBM07 : how long do these last when decanned?

    No, the figure given is the percentage of degradation from the diode's initial output when the test started. The relation to a diode that retained it's original "ball lens"/cap should be the same between the two. <5% output degradation as specified by LaserTree after 720 hours of operation...
  14. aaronnoraa

    NUBM07 : how long do these last when decanned?

    Not very long... as in, it's common to hear people report their diode being noticeably dimmer within a week. I would suggest buying a capped NUBM07 from lasertree on ebay. They sell NUBM07's along with many other gball diodes that have been canned with an inert gas fill and I've heard...
  15. aaronnoraa

    NUBM0C 465nm 4.1W@rated, 5.9W@4A via G2 - 1.4X brighter than NUBM44@7W

    That may be due to your monitor having a poor color gamut, watching your video there is an absolutely obvious difference between the 07 and the 44, the 07 appearing sky blue and the 44 appears almost violet in comparison when viewed on my monitor. Can you compare the 0C and the 44s...
  16. aaronnoraa

    NUBM0C 465nm 4.1W@rated, 5.9W@4A via G2 - 1.4X brighter than NUBM44@7W

    Thanks for the info. It's normal for diodes to vary a few nm from diode to diode so it's possible you happened to get one on the low end of the spectrum, at least that's what I'm hoping :) Could you possibly take pictures of the NUBM0C and the NUBM07's spot to compare them? Or a pic of the two...
  17. aaronnoraa

    NUBM0C 465nm 4.1W@rated, 5.9W@4A via G2 - 1.4X brighter than NUBM44@7W

    Awesome, I'm about to order one as well. Did you order yours from Techhood, OpticsLD or someone else? LaserTree is awesome.. they have so many "ball lens" diodes available that are properly recapped with inert backfill and FAC and SAC options on most of the diodes. I'm hoping they will start...
  18. aaronnoraa

    NUBM0C 465nm 4.1W@rated, 5.9W@4A via G2 - 1.4X brighter than NUBM44@7W

    Why hasn't there been talk about this diode other than a couple one post topics posted in the wrong forums (445nm, etc)? Considering that people are still making builds with the NUBM07 and this diode appears to supersede it, I'm surprised that this isn't available on DTR's site or even seems to...




Top