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  1. DrSid

    what are nm?

    Some nice pictures here though .. necro for sure, but nice find !
  2. DrSid

    1W blue laser and flies?

    Didn't we talk about this like week ago ? I'm surprised it's not the same thread ..
  3. DrSid

    O-like vs Survival Laser vs Laserer

    O-like is no problem, really. :beer:
  4. DrSid

    Does this laser seem legit?

    Interesting indeed .. well there are even stronger diodes in IR .. but not in 445nm. This is just another 'add some zeros -> profit' page ..
  5. DrSid

    Does this laser seem legit?

    You can get 3W from 9mm diode, if you are lucky. 5W from single diode laser is out of question .. at least today. And the host is too small and cheap to house dual laser. It's likely it would be around 1W.
  6. DrSid

    Verbal and Photo Descriptions of the Visible Wavelengths

    Yes .. that should work nicely. More or less, as it can also differ with intensity .. in the end the wavelength alone is the best description. :beer:
  7. DrSid

    Verbal and Photo Descriptions of the Visible Wavelengths

    There is so many factors in play .. even with eye alone. Eye perceive colors differently based on other lights around (it more or less does what automatic white balance does in cameras). It also depends on eye condition, especially actual amount of blood in it. For example if you lie down for a...
  8. DrSid

    TEC TTL, Analog Modulation

    Can't talk about size and so on .. but it modulates current to the diode, which controls the power of the beam. The laser diode output depends on the current in almost linear fashion. There is however some lower limit to the output power, below which the diode will only generate non-coherent...
  9. DrSid

    best beam quality

    No idea, never seen this ..
  10. DrSid

    best beam quality

    Well depends on power .. my 400mW DPSS green has many additional modes .. I would go for 405nm or red .. I mean data recording diodes .. DVD or BRD, as they are designed to have perfect beams, unlike many DPSS lasers.
  11. DrSid

    9mm 445nm "Blue Mysterio" (with burning video & beamshots)

    Re: 9mm 445nm "Blue Mysterio" You can also estimate power by battery current. The you can compare it with battery current of someone with same diode and driver .. it more or less scales in linear way. Sure, diodes can differ in tens of percent, but it should give you some idea.
  12. DrSid

    Laser Art in Science Class?

    Yes, we build lasers .. but the weakest reasonable build would be 200mW red .. we do also 700mW 405nm or up to 3W 445nm or even more .. those are all very strong lasers. You want 5mW at max, and there is no sense in building those. Well you can buy the stand alone modules real cheap, which...
  13. DrSid

    Laser Art in Science Class?

    If you want the beam to be visible, in thin air .. in bright lit room .. you will need high, not-safe power. But you can make the beam more visible by using smoke machine and dark room, or crystal which is not perfectly clear. Green is the best visible color. Powers up to 5mW are considered...
  14. DrSid

    A few builds

    Cho cho cho ..
  15. DrSid

    Advice needed for buget 200mw red's & goggles

    Which reminds me about this cool thread about drivers .. http://laserpointerforums.com/f67/how-laser-diode-drivers-work-explanatory-thread-71513.html
  16. DrSid

    Airborne laser .. 445nm one ?

    Thanks .. hope I did not fry it already as I might have shorted it .. it should be activated, they sell camera to connect to it separately ..
  17. DrSid

    Advice needed for buget 200mw red's & goggles

    You will need some heatsinking even at these powers. But it could be anything really .. good job anyway .. that's how you learn things ..
  18. DrSid

    Airborne laser .. 445nm one ?

    Hey .. RC guys .. maybe you can help me .. this quad I have has accessory port which is controlled from the transmitter. Problem is, I have no idea how it works. There are 3 wires. Two of them are + and -. I would expect the third to somehow react on the control button .. but it does not. It's 0...
  19. DrSid

    Advice needed for buget 200mw red's & goggles

    It will give you several seconds protection, even few seconds at 1W .. but it will get damaged quite soon. I tested my goggles like this (true, with 1.5W 445nm) and I made a visible distortion right in the middle of the view field. I actually think it's a good test .. just use some corner of the...
  20. DrSid

    Advice needed for buget 200mw red's & goggles

    You'll see with 100mW .. do not send 100mW beam directly through it though, it might melt it.


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