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Thread: NUBM07E 465nm 2.9W Diode Test

  1. #61
    swamidog's Avatar
    swamidog is online now Jr. Woodchuckington Janitor III, Esq.
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    Quote Originally Posted by drm916 View Post
    I was thinking the same thing. Probably much easier to measure. Sometimes those spots are so bright they are hard to measure.
    practical, and awesome.
    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.

  2. #62
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    Ya ...hahaha seems a reasonable approach !! Next....will be measuring the hole punched thru the beam target !!! Hahaha....I think Planters will get his way !!! Big Sky Opalooza...here we come !!! But...we still need a whole lotta Red. !!!! 10W....Even Terrawatt's ears twitch upon hearing this wish !!
    Last edited by CDBEAM; 08-25-2015 at 19:02.
    Beam Axiom #1 ~The Quantum well is DEEP ! Photons for ALL !!
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  3. #63
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    Beam shots of this diode running near 470nm (I hope, not measured) at 4.5 amps. Beam expanded to 2 inches/50mm, fast axis toward camera:

    Click image for larger version. 

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    Click image for larger version. 

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    Last edited by Laser57; 08-28-2015 at 16:29.

  4. #64
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    Wow! And with a nearly full moon! What'd I tell ya?

  5. #65
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    So are these 5.6 or 9mm?

  6. #66
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    They are 9mm....

  7. #67
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    cheers mate I just re read through and noticed someone else asked, so thanks for the reply and apologies for my blindness not noticing it first time round!

  8. #68
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    Hi

    I do not recommend to remove the can from the laser diode. As far as i know the life time of the diode will degrade rapidly. This effect is especially for InGan substrate material.
    Laser diodes without can will only last a few hundred hours!

    http://ieeexplore.ieee.org/xpl/login...mber%3D5415654

    https://books.google.de/books?id=7Sj...sphere&f=false

  9. #69
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    Thanks for the references, but they leave me a little confused. It seems that the problem may be due to carbon depositing on the facet and the source of the carbon may be from the electroplated gold? Nevertheless, the presence of oxygen does not seem detrimental, so air may be superior to pure nitrogen. Removing the can may actually help by reducing the concentration of hydrocarbon that can be deposited especially if the source of the hydrocarbon is within the can.

  10. #70
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    @CDBeam - I'm curious about the ratios you posted earlier. They seem waaaaay off from common practise, specifically the red.
    You are wanting 4 times as much red as green, but most people get very satisfactory results with 0.75 to 1.5 times red to green. Certainly, 1:1:1.5 of RGB gives a pretty good white balance.
    I would think 4x the red would give a particularly pinkish white.

    Even the big modules Logsquared built for us recently had 3W red, 6W 520 AND 10-12w 462 and they turned out a passable white.
    Frikkin Lasers
    http://www.frikkinlasers.co.uk

    You are using Bonetti's defense against me, ah?

    I thought it fitting, considering the rocky terrain.

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