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Thread: 473nm CNI MBL-100 doing up to 170mW (analog)

  1. #1
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    Default 473nm CNI MBL-100 doing up to 170mW (analog)

    I've been hanging on to this one since I really like the thin DPSS beams.
    However, I need to raise some funds for a new green since my green got nailed by a power spike of some sort at the last LEM. So the blue is up for sale.

    Sorry for the typo in the title but this is actually an CNI MBL-50, analog labby putting out a huge amount of power. When new it did well over spec doing close to 140 mW at full power (on die4thing).
    EDIT: I should add that this laser does have an IR filter installed, so the power output is all blue photons!


    Catch 1:
    Beam is however is not completely TEM00 but it hasn't bothered me too much, will post pics later.

    Catch 2:
    Pots have been retuned to see if the beam mode could be thermally adjusted. It could not be done but the result is that it has been thermally retuned for max output peaking at 170 mW. THE DIODE CURRENT WAS NEVER INCREASED. This laser was not meant to go back into the projector, but the pots can be retuned to lower power and possibly better modulation characteristics for inside a projector (will provide procedure if interested).

    Catch 3: key switch is inoperabel and has been bypassed. Internally there is an optional connector to supply the modulation input with +5V for CW operation without external inputs. Of course external modulation is also still possible.

    Looking for Euro 200

    thanks for looking
    Last edited by Zoof; 01-21-2011 at 02:43.

  2. #2
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    Default

    Here are some pics to show the laser to be in good condition, the beam quality and output power.

    The beam does not look bad at all, it is actually much better than I had remembered. Probably because I can obsess over little imperfections. Price has been set low, so here's an opportunity.
    The power is concentrated in the middle as you can see on the black background but with the white background the spot's contour has a hint of non-TEM00. (I had said TEM01 above but this was not accurate at all, see pics) Beam spots are at 10m from aperture.

    Click image for larger version. 

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    Last edited by Zoof; 01-19-2011 at 10:26.

  3. #3
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    Default

    Bump, has 473nm really gone out of fashion completely?

  4. #4
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    I'm interested

    Looks perfect for the projector I'm building (my first )

    But first...:

    Estimate of running hours?

    Estimate of output power if retuned for projector use?

    Shipping costs?

    /Thomas

  5. #5
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    Hi Thomas,

    running hours is pretty low: < 50 for sure.
    retuning it back to good modulation characteristics, being conservative, 120mW
    shipping to Denmark: 13 euro

    good luck with the first projector - beware the addiction ;-)
    Matthijs

  6. #6
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    Quote Originally Posted by Zoof View Post
    Hi Thomas,

    running hours is pretty low: < 50 for sure.
    retuning it back to good modulation characteristics, being conservative, 120mW
    shipping to Denmark: 13 euro
    Sounds good to me...

    If you can wait till Monday, you can consider it sold

    Quote Originally Posted by Zoof View Post
    good luck with the first projector - beware the addiction ;-)
    Matthijs
    Thanks - the addiction has already kicked in - thoughts of satellite projectors coming into my mind... Even before the first projector has been build

    /Thomas

  7. #7
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    So did this one sell? If not, I'd be interested in the 473nm for my laser harp.

  8. #8
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    Quote Originally Posted by Stoney3K View Post
    So did this one sell? If not, I'd be interested in the 473nm for my laser harp.
    It has a new home in my projector now

    /Thomas

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