• Frequency stability and reproducibility of iodine stabilised He-Ne laser at 633 nm

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    • Keywords


      Frequency stabilisation; wavelength standard; He-Ne laser

    • Abstract


      The frequency of a 633 nm He-Ne laser is stabilised on a hyperfine-structure-component of natural iodine vapour. The third harmonic component of an applied modulation frequency is detected and a servosystem is used to lock the laser frequency to the zero-crossing of the third harmonic component. The stability and the reproducibility of the laser are determined by beat frequency experiment.

    • Author Affiliations


      V D Dandawate1 Kowsalya1

      1. Length Standard Section, National Physical Laboratory, New Delhi - 110012, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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