Electronic improvement of interferometric measurement of dye laser wavelengths |
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Authors: | J J L Mulders P A M Steeman A H Kemper L W G Steenhuysen |
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Abstract: | The wavelength of a dye laser beam has been determined with a Michelson interferometer with one moving mirror. The addition and design of a phase locked loop (PLL) to multiply the fringe frequency is discussed. Experimentally it appeared that the addition of a PLL has two main advantages: an improvement in the resolution of the system by a factor of ten, and an improvement in reproducibility due to the flywheel effect of the PLL. |
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Keywords: | lasers interferometry phase-locked loops wave meters |
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