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Fiber-optic Evanescent Wave Fluorescence!

Discussion in 'Electronic Repair' started by Girish Mulye, Jul 12, 2004.

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  1. Girish Mulye

    Girish Mulye Guest


    I'm trying to set up an inexpensive fiber-optic evanescent wave
    fluorescence system, does anything know much about that? In particular,
    the lasers are quite large/expensive, be it 488nm Argon-ion or some sort
    of HeNe. Why do people not use cheaper laser diodes, such as the ones
    offered by Sanyo or Sony? For example, I was looking to launch one of
    these lasers:

    into a multimode fiber and go from there...why would this NOT work?
    Sorry, this probably a quite basic question but I am new to the field.

  2. James Sweet

    James Sweet Guest

    You should post this on alt.lasers, you'll likely get more educated

    I'm not sure about this application, but diodes generally have poor
    divergence and beam shapes, as well as high powered ones outside of the IR
    wavelength are difficult/expensive to obtain.
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