The Fenix-Store        
Results 1 to 8 of 8

Thread: did the cloud bouncing, so what's next?

  1. #1
    Enlightened axd's Avatar
    Join Date
    Apr 2009
    Location
    gent, belgium
    Posts
    93

    Cool did the cloud bouncing, so what's next?

    Having had the initial fun with my laser (no, I didn't pop or burn anything even if I could, but I did test the spot on my index finger ), I'm now looking further and was thinking of experimenting with optics: I mean, not (yet) the laser show stuff with electromechanical moving parts, but rather gratings etc...

    Does anyone know interesting sites/pages where laser experiments are described? I don't mean the laboratory type experiments with tables full of equipment, but rather optic effects where e.g. the beam is split to give a "starfield" effect, or maybe colour-changing effects (if that's possible with a monochrome beam, guess not).

    So what are the possibilities other than popping balloons or burning stuff? Diffraction gratings are only one dimension even if there are various possibilities; e.g. a CD seems to give interesting effects, but there must be more dimensions than gratings.

    For example, the reflections off materials or the pattern formed on a wall when skimming the borders of stuff (skin, hair, clothing, ...) produces interesting patterns: I have the impression that shining through synthetic wool shows repetitive patters that do not appear when shining through natural wool. (think also of this post). Maybe small holograms could be fun stuff too, don't know.

    Because it's difficult to get an idea of the range of a laser from the perspective of the "shooter", I might try to put a mirror at a few 100m to reflect the beam into the sky, so that it is possible to determine how high the beam actually goes.

    Another - a bit more risky experiment - could be with a laser reflector positioned a mile or so away, to get an (own) impression of how intense the beam can be. (As a side note, if these lasers keep getting more powerful, maybe one day we will be able to do a moon bounce ...) But when browsing the Net, (eg thorlabs) I think I will pass because I guess the reflected power is far too low to observe in the distance. Better is someone doing the test.

    And found some interesting stuff (gratings) on dragonlasers, there must be more!

    Thanks,

    -alex-
    Last edited by axd; 04-05-2010 at 06:18 AM.
    SL SW | H50-Q5 | Petzl e+LITE | LF2XT/Sapph/3H | H501W,R | beta (H3O) | Photons | ACR FA-11 | Ficklampa 3 | Energizer NIght Strike | Olight O'pen | more
    betalight owners, have a look here

  2. #2
    Flashaholic* bshanahan14rulz's Avatar
    Join Date
    Jan 2009
    Location
    Tennessee
    Posts
    2,789

    Default Re: did the cloud bouncing, so what's next?

    If you find a broken LCD screen, those have multi-layered backlights that have defraction gratings, gradient shadings, all sortsa goodies.

    Also, plate glass, like the kind my coffee table is made of, can trap the beam if you shoot it in at the right angle and it has a beveled edge...

    if it is focusable and powerful enough, you can trap particles of smoke.

    you can make a laser tunnel using a small mirror and a simple motor (mount the mirror so that it spins, the mirror plane should be close to perpendicular to the motor axle. but not perfectly perpendicular)

    you SHOULD get some eye protection for whatever wavelength your laser is. (while we're at it, what wavelength is your laser?)

  3. #3
    Enlightened axd's Avatar
    Join Date
    Apr 2009
    Location
    gent, belgium
    Posts
    93

    Default Re: did the cloud bouncing, so what's next?

    Quote Originally Posted by bshanahan14rulz View Post
    If you find a broken LCD screen, those have multi-layered backlights that have defraction gratings, gradient shadings, all sortsa goodies.
    Interesting, thanks!

    Also, plate glass, like the kind my coffee table is made of, can trap the beam if you shoot it in at the right angle and it has a beveled edge...

    if it is focusable and powerful enough, you can trap particles of smoke.

    you can make a laser tunnel using a small mirror and a simple motor (mount the mirror so that it spins, the mirror plane should be close to perpendicular to the motor axle. but not perfectly perpendicular)

    you SHOULD get some eye protection for whatever wavelength your laser is. (while we're at it, what wavelength is your laser?)
    532nm (=green, plus "matching" red goggles ).
    Note: I'm busy trying to collect information in this wikipage.
    SL SW | H50-Q5 | Petzl e+LITE | LF2XT/Sapph/3H | H501W,R | beta (H3O) | Photons | ACR FA-11 | Ficklampa 3 | Energizer NIght Strike | Olight O'pen | more
    betalight owners, have a look here

  4. #4
    Flashaholic* Linger's Avatar
    Join Date
    Feb 2009
    Location
    Kingston ON
    Posts
    1,437

    Default Re: did the cloud bouncing, so what's next?

    Quote Originally Posted by axd View Post
    I might try to put a mirror at a few 100m to reflect the beam into the sky, so that it is possible to determine how high the beam actually goes.
    Hey, how about you position the laser, in a secure environment, shooting straight up. Then YOU move a 100m away. From your new spot you can look to see how high the beam goes.
    Installing Quantum Tunneling Composite (QTC) into M@glite Solitare

  5. #5
    Enlightened axd's Avatar
    Join Date
    Apr 2009
    Location
    gent, belgium
    Posts
    93

    Default Re: did the cloud bouncing, so what's next?

    Quote Originally Posted by Linger View Post
    Hey, how about you position the laser, in a secure environment, shooting straight up. Then YOU move a 100m away. From your new spot you can look to see how high the beam goes.
    Or get a helper... Or even add a timer to switch the laser on/off; I'd prefer not to leave my unit alone
    SL SW | H50-Q5 | Petzl e+LITE | LF2XT/Sapph/3H | H501W,R | beta (H3O) | Photons | ACR FA-11 | Ficklampa 3 | Energizer NIght Strike | Olight O'pen | more
    betalight owners, have a look here

  6. #6
    Flashaholic* Linger's Avatar
    Join Date
    Feb 2009
    Location
    Kingston ON
    Posts
    1,437

    Default Re: did the cloud bouncing, so what's next?

    re: rather not leave it alone - I totally get that, you want to exercise due diligence ensuring no accidental lazing happens. Which is why I suggested the location be secured. But getting a helper is great too.
    Installing Quantum Tunneling Composite (QTC) into M@glite Solitare

  7. #7
    Flashaholic* allthatwhichis's Avatar
    Join Date
    Jul 2006
    Location
    central florida
    Posts
    926

    Lightbulb Re: did the cloud bouncing, so what's next?

    www.photonlexicon.com This is where lasers truly become an obsession and you start to really spend some money.

  8. #8

    Default Re: did the cloud bouncing, so what's next?

    As a side note, if these lasers keep getting more powerful, maybe one day we will be able to do a moon bounce ...
    The pros have been doing the moon bounce for decades:

    http://en.wikipedia.org/wiki/Lunar_L...ing_experiment

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •