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Thread: an amusing (but useless) trick

  1. #1
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    swamidog is offline Jr. Woodchuckington Janitor III, Esq.
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    Default an amusing (but useless) trick

    take a 445 diode, power it up so it just barely glows and run it through some diffraction grating.

    what do you see?
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

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    Mind posting a picture? I don't have a 445nm diode on hand ATM.

    I know they emit a teeny bit of green at low power below the blue bar.

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    Quote Originally Posted by swamidog View Post
    what do you see?
    *

    A hole in my diffraction grating !



    May I must reduce output ^^

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    lots of little beams?
    do you see the beams from the different emitters?

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    no, you see violet, blue, and green.

    Quote Originally Posted by dar303 View Post
    lots of little beams?
    do you see the beams from the different emitters?
    suppose you're thinkin' about a plate o' shrimp. Suddenly someone'll say, like, plate, or shrimp, or plate o' shrimp out of the blue, no explanation. No point in lookin' for one, either. It's all part of a cosmic unconciousness.

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    Hey, hes right!.
    i just did it, and theres a violet line and a green line. but they go away above threshold.
    Will there be three phase!!!!

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    Spontaneous emission? Or lasing?


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    I do not know to much about lasers but I have also noticed some green around the edges when using one of these 455 diodes in one of my cheap Chinese projectors that Itook apart and installed one into. What causes it?

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    Pretty cool.
    15 chars.......
    Wiki:The first visible wavelength laser diode was demonstrated by Nick Holonyak, Jr. in 1962.



    FS: hi grade SEAL DUST

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    Quote Originally Posted by Meatball View Post
    Spontaneous emission? Or lasing?
    How about throwing it through a reflect blue, pass green dichro and see what's at the other end?

    Spontaneous emission would probably not collimate well enough to hit the other end of the dichro in a tight enough beam.

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