A new optical interference method to measure He-Ne laser wavelength

Akram Noori Muhammad, Mashaan Attallah Mahmood


A new optical method used in our lab to get clear fringes of interference use “He Ne laser” as a light source. These experiment construct firstly to avoid our need to sodium lamb, Secondly, a convex lens was used to obtain a large image fringes to make the parameters more accurate than using the real fringes, by using a new mathematical relationships, the wavelength was measured. The results were more accurate than the normal methods used.


Laser source, image fringes, wavelength

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DOI: http://dx.doi.org/10.23851/mjs.v29i2.410


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ISSN: 1814-635X (Print), ISSN: 2521-3520 (online)