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Thread: 556 vs 561, visible difference?

  1. #1
    Join Date
    Oct 2007
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    Stockholm
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    8

    Default 556 vs 561, visible difference?

    Hello laserists! I am about to purchase a 556 or 561 nM laser module, but I can't decide which one. Anyone who has seen both of these wavelengths IRL? Is there a (significantly) visible difference in colour? Or are they pretty similar?

    Cheers,
    Filip

  2. #2
    Join Date
    Jun 2010
    Location
    Australia
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    3,730

    Default

    I have not seen either wavelength LD yet but theoretically 556nm will appear brighter. Not much difference between the two as they are so close.

    Keen to hear opinions.
    This space for rent.

  3. #3
    Join Date
    Feb 2008
    Location
    East Sussex, England
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    Default

    Those are fairly unusual wavelengths. Care to share which manufacturer and technology? I can find Coherent OPSL for 561nm, but not 556
    Frikkin Lasers
    http://www.frikkinlasers.co.uk

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

    I thought it fitting, considering the rocky terrain.

  4. #4
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    veenwouden
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  5. #5
    Join Date
    Aug 2011
    Location
    Alabama
    Posts
    270

    Default

    Someone had both at SELEM 2011. You can see a slight color difference. You might want to ask over at LPF. There are a few that collect as many different wavelengths as possible.

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