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Laser-linewidth measurement with a Fizeau wavemeter

C Reiser, P Esherick, R B Lopert

    Optics Letters
    |September 12, 2009
    PubMed

    Abstract:

    It is shown theoretically and experimentally that a Fizeau wedge wavemeter typically used to measure laser wavelength can also be used to measure the linewidth of a pulsed or cw laser. Linewidths as small as a few hundred megahertz can be measured by choosing the thickness of the wedge properly.

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