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  1. DTR

    Green laser dot issue

    Here is a little dye reflection montage. The green is the most noticeable due to the higher relative brightness compared to blue and red colors that are available as direct diode lasers..
  2. DTR

    Sharp GH04W10A2GC 350mW 405nm

    Good fun. MIght be able to last a bit if using a driver with a slow rising start. Lazeerer made some drivers for pushing the single mode 405's back in the day. On the wavelength If I remember correctly It seemed whenever I would see testing of the BDR-209's and BDR-S06J's they were reporting...
  3. DTR

    DTR's Laser Shop - Laser Diodes & More

    The main differences are the TTL option on the SXD and the ACS units have no components on the underside designed to be flat mounted for heatsinking the driver. The SXD is mounted via the 8 pin chip to heatsink it. No difference with that configuration. Both will deliver 4.5A to the diode...
  4. DTR

    DTR G8 lens

    Yes the lens element is too large to fit in my standard lens barrels and uses this black housing one that has a larger :)
  5. DTR

    Happy Independence Day LPF

    Hope all had a good 4th. Here is the show I watched. Actually watched from my brothers house which is on the opposite side of the show than shown below. Better viewing from his house without the trees in the way but got home and noticed my doorbell captured the whole. Crappy video but check out...
  6. DTR

    Out Of the Blue

    Great article. "Nov. 29, 1993, came the announcement that stunned the electronics industry" https://www.forbes.com/global/1999/0906/0217066a.html#7eb55293867f
  7. DTR

    DTR's Laser Shop - Laser Diodes & More

    NUBM08 for good reference vs a NUBM44 as they are pretty close for raw output geomitry. Yea I will need to get some spread numbers vs other lenses but here is the raw of a NUMB44 vs the raw from a NUBM08 with the G-3. The NUMB44 does not show all as some light is absorbing into the wall the G-3...
  8. DTR

    DTR's Laser Shop - Laser Diodes & More

    Need to clean it back up with all the testing it got a little dirty which is the halo.
  9. DTR

    DTR's Laser Shop - Laser Diodes & More

    Just to make sure you saw I did say G-3. Also the 08 ball lens and the G-3 element are separated only by the distance of the lip the G-3 sits on. I get a very nice slow spread which also is not absorbing into the walls of the housing any light before entering the panny lens. Need to print...
  10. DTR

    DTR's Laser Shop - Laser Diodes & More

    Great stuff Red.🍺 Tried tons of stuff yesterday and so far one that I like which I will post up when I get back to the house is flipping the lens element around in the DTR-G-3 which and found a great way to mount those large panasonic lenses using a 9mm diode mount and hollow back half. Lens...
  11. DTR

    big problems with sharp 185 mW 638 nm diodes

    EDIT Was getting a little brain fried last night, Was a long day. Cleaned up some near unintelligible rambling. OH wrong video. This alone blew me away. 2.3V in 100mA out on and the load based the the mapping data only 0.35V.o_O Sorry as I mentioned in my last it is not really an "answer"...
  12. DTR

    big problems with sharp 185 mW 638 nm diodes

    Anyway check out how low this can go and still have regulation. That Is a amazing
  13. DTR

    big problems with sharp 185 mW 638 nm diodes

    Was not able to take a pic of the test? A picture really just conveys what you want you are seeing and Really want to help but with so little info and what there is a bit confusing so have to give my best go. I actually got some great info tonight so will post this but if you would rather not...
  14. DTR

    big problems with sharp 185 mW 638 nm diodes

    Can't see any immediate issues with the driver. How about the power source and the voltage drop of your simulated load. You can test the load directly on your lab supply to get the exact forward voltage at the current you will be using by just by connecting the supply directly to your simulated...
  15. DTR

    big problems with sharp 185 mW 638 nm diodes

    On the driver yea when you get a moment just a regular pic of both sides as long as you can see it clear. Just had a conversation with a guy last night which was pretty common on this one as he was thinking his BB6 was dead. Finally sent a pic and immediately spotted a common thing with them...
  16. DTR

    big problems with sharp 185 mW 638 nm diodes

    Lets start here. Yes the process on bare diodes is to use one of the three diode testers Lazeerer set me up with which are X-DRive minis with diode stockets ont en them. 150mA/350mA/1A which is enough to get any diode i carry above lasing except the case positive/case negative diodes which...
  17. DTR

    big problems with sharp 185 mW 638 nm diodes

    With the power on and the voltage and current set to zero? That part is very important with these 638nm type diodes even the 700mW variants. If there is any potential on the supply when connecting it will pop them. They have all kinds of pinouts if you see sharps page with all the different...
  18. DTR

    big problems with sharp 185 mW 638 nm diodes

    Sorry to hear that.. Lets see if we can figure out what happened here. It sounds like nothing had happened yet with it connected to the driver. I am betting the power supply might be the culprit. If you can give some details of the power supply used and the exact process of attempting to power...
  19. DTR

    DTR's Laser Shop - Laser Diodes & More

    Ok banged my head for a few minutes till I realized that my plan to mount both G's in the extended barrel might not work if I am right. I need to vary the distance between the two G's to get it to work unless I can find the exact perfect distance which would be a futile exercise.
  20. DTR

    DTR's Laser Shop - Laser Diodes & More

    I pulled out my stash of extra long lens barrels. I am going to try some different setups. For the backwards G and forward G do you have an estimate of the distance from G to G that worked for you? Would be nice if it was this easy. Sorry was actually trying to find one I thought I had...




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