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He Ne Laser Spectra (MP-B-HN)

He Ne Laser Spectra (MP-B-HN)

Emission spectra from each of the two gases are compared to the spectrum from the combined gas laser.


1.  Helium spectra tube
2.  Neon spectra tube
3.  2-Spectra power supplies
4.  HeNe red laser (special one w/ plexiglas top)
5.  Diffraction gratings (1 for each student)
6.  Plug strip
7.  Cylindrical diffraction screen

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  • Description

    Product Description


    1.  Place spectra tubes into the power supplies.  Carefully stack the two power supplies & turn them on.
    2.  Turn on the laser & hold the open window of the laser above the power supplies.
    3.  Have students look through the gratings at each spectra and compare.
    4.  Notice that the individual spectra are combined in the HeNe laser.

    Do Not Leave on more than 30 sec.