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  • JamesG14 commented on jrcgarry's instructable Desktop Michelson-Morely Interferometer2 years ago
    Desktop Michelson-Morely Interferometer

    Pavelkh,Lasers are not 'one-size-fits-all'. One criterion is their coherence length - this is the distance over which the laser light is coherent (and therefore can produce interferencde).But having said that, I'm very surprised that even a simple laser pointer wouldn't be sufficiently coherent.For the record, I bought this one from Roithner Lasertecnnik in Vienna. But it's nothing special - 2mW, glass lenses - but certainly not 'laboratory' grade.:(Wish that I could be more helpful!

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