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  1. G

    List of Laser Diodes - 06/02/2021

    Post the link for that $240 571nm :D
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    Virgin NUBM44 Laser Diodes For Sale.

    Beam quality > output power unless its a flashlight you're going for
  3. G

    Guide: Where to buy 18650 & 26650 Li-Ion batteries

    If you have any vape shops near you, the vape batteries tend to be about as good as LiIons get
  4. G

    PBS beam combining two NUBM38s

    I don't know the answer but I don't think you need to worry at your power levels. What I do know is that mirrors are currently far more laser-resistant than lenses, so one could try expanding some beams with a mirror expander, so there is a hole in the middle before putting them into the PBS...
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    A formal introduction

    Does RGB yellow count as having a "yellow" laser?
  6. G

    5W 445nm & 4W 470nm Sanwu Laser Rangers, plus Review of Most Sanwu Accessories

    Honestly one of the most comprehensive and humorous laser reviews I have ever read... you are a blessing to LPF!
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    IR filter laser question

    Cheap eBay lasers won't have one, so just buy the cheapest one you see and then glue this to the end (can cut it to shape): https://www.ebay.com/itm/UV-IR-Cut-Filter-Rectangular-28-x-20-mm-Thick-1-7mm-AR-Coating-For-Photography/265062907164 Full disclaimer: I have no idea if the above UV filter...
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    Nugm04 question

    If by collimator you mean the factory G-ball lens, then the flat window version can be mounted into a module as-is while the G-ball needs to be decanned so that it can be focused (AFAIK the NUG- series diodes don't die when decanned)
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    Is there a beam difference between 520nm and 525nm?

    Odd, the 525nm laser diode is actually cheaper than the 520nm one...
  10. G

    FOOD!!!!!

    lol, I guess lasers could be used to draw intricate patterns onto otherwise boring dishes
  11. G

    Where can I buy a "DTR" laser power meter?

    Singapore
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    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)

    561nm seems to be an affordable wavelength, but for me I only start to see "yellow" after 570nm... anything below that looks like piss green
  13. G

    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)

    But specifically which of these common knowledge DPSS diodes offers the best value?
  14. G

    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)

    It's not a non-answer. CNI specifically quoted me the mentioned price and specs when I asked and were willing to send me a unit... just that I'm too broke But the dragonlasers module is way better value, just out of curiosity did you know of any even more powerful providers? Thanks!
  15. G

    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)

    idk haven't bought one, but pretty sure its supposed to be 1.5mrad
  16. G

    Please don't do this.......

    If they really managed to somehow detect people behind mosquitoes, I want one lol!
  17. G

    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)

    You will need a budget of at the very least $360 USD: https://www.gophotonics.com/products/lasers/changchun-new-industries-optoelectronics-tech-co-ltd-/29-264-pgl-h-589 They also make greener yellows afaik
  18. G

    Please don't do this.......

    But what if a human is a few meters behind the mosquito looking into the laser as it fires at the mosquito
  19. G

    Help - My First Build - Laser Cigarette Lighter

    Of course it's still class IV! But under normal operation all someone would see is a nice {insert color here} laser beam lighting a cig inside an enclosure The safety mechanism could be a contact switch that the cig has to press from inside the enclosure to turn the lasers on (meaning the entry...
  20. G

    Help - My First Build - Laser Cigarette Lighter

    You are still putting the IR-blocking layer, but the 5mW visible wavelength would be able to get through it


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