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



Recent content by LaserMicroscope

  1. LaserMicroscope

    I’m a Virologist - AMA

    Because coronaviruses are ssRNA viruses, the typical mechanism for nucleic acid damage via UV light (thiamine dimers) doesn't happen here. The typical wavelength for germicidal UV is (I believe) 253.7nm. For coronavirus, I would reccomend a dose of 12mJ/cm^2. Coronaviruses have both a lipid...
  2. LaserMicroscope

    I’m a Virologist - AMA

    I can’t promise answers to every question to everyone’s satisfaction (because some things we don’t know yet) but if for some reason you have a virology related question, please feel free to ask. Cheers
  3. LaserMicroscope

    A question about optics

    Physics is a harsh mistress - I think I misspoke in the post (and definitely could have drawn the diagram better since it resembles a ray diagram which isn't exactly what I was going for) - I know about the unfortunate physics of beam diameter/divergence, I was more looking at a way to bring...
  4. LaserMicroscope

    A question about optics

    Hey all, hope everyone is healthy and safe right now. Folks, I have found my way into the bourbon reserves after a long lab day so I have a question that I'd like to farm out to you all - it has to do with optics and beam combination. I'm a molecular virologist and not a physicist, so I'm out...
  5. LaserMicroscope

    Safety goggles for diy CNC laser

    Don't mean to put words in his mouth, but I've seen these listings too and they all look like disreputable branding a module containing a NUBM44-V2 (or an even weaker diode) - the ones I've seen have been the CNC head equivalent of the "worlds most brightest 10,000 MILIWAATTS laser POWER laser...
  6. LaserMicroscope

    Anyone familiar with these "picosecond laser pens" ?

    I don't mess with those lasers for one simple reason: capacitors. I HATE working with capacitors, and I could never trust high powered caps in a cheaply made product.
  7. LaserMicroscope

    My Eyes Deceived Me

    Oh that's good to hear - the project is back on track then!
  8. LaserMicroscope

    2019-nCoV - VERY CRITICAL SITUATION. !DANGER!

    both technically possible. Current tests measure viral genetic material in body fluids and those can persist - I haven’t read too much of the day to day clinical stuff (though I should, I have researcher access to some trial results) but here’s what I know: definitive reinfection requires 3...
  9. LaserMicroscope

    Can someone explain how beam divergence works?

    Though I did get the reaction image first. Small victories. ;) cheers
  10. LaserMicroscope

    Can someone explain how beam divergence works?

    Gaahhhhh darn it Cyparagon, you had to go and link to the VERY document I was going to reference while writing out an over-long explanation. I really need to get better at beating you to posts when I’ve had a bourbon and I’m feeling wordy.
  11. LaserMicroscope

    2019-nCoV - VERY CRITICAL SITUATION. !DANGER!

    Oh trust me we’re trying. And trying and trying and trying. My lab is trying to pick up some coronavirus work so we can get back in and start helping at the moment, but for now they’re parading us into faculty/community conference calls as virus experts to answer questions, which to some extent...
  12. LaserMicroscope

    My Eyes Deceived Me

    I’m jealous; I wish I had the quantity to bin! You think Jordan would be able to do that? I don’t even know how I’d get in touch since he doesn’t seem to be active on here, but if he could that would be pretty darn awesome. Id love to buy a binned 488 from Jordan along with the 1.6W 405 diode (I...
  13. LaserMicroscope

    My Eyes Deceived Me

    Yes I've noticed that! That's why I wasn't sure about the wavelength until I measured it, it seemed just a littttle greenish, but I figured it might be because I tend to use my blue lasers around the same time. Part of what I'm craving though is that really lovely pale sky blue color, alas it...
  14. LaserMicroscope

    My Eyes Deceived Me

    Well all, I've got to come clean - I was wrong about the wavelength of one of my lasers. Although I work with 488nm light all the time, I suppose my eyes aren't all I thought they were, as I just measured the wavelength of my "488nm" laser, and it's outputting at 495nm. Don't get me wrong...
  15. LaserMicroscope

    7 watt diodes, too powerful to have fun with?

    Clamped off laser outputting into a beam dump? I could be convinced that removing goggles is alright then. Look I’m no purist, I love to see my lasers as more than whitish dots. But the fact is that, especially with blues, the wavelengths in question are particularly harmful. The “room glow” you...




Top