Depolarization Studies of Raman Lines. A Simplified Method

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Abstract
A simplified method for the determination of the depolarization factor of Raman lines is reported which requires only one exposure and is, therefore, independent of fluctuation of arc current and any other factors influencing the intensity of Raman lines. Two Polaroid films are placed at the front of the slit of the spectrograph, one above the other. The electric vectors of the radiation are at right angles to one another. Between the Polaroid films and the slit are introduced two half‐wave mica plates (one above the other) which orient the electric vectors of the light so that they are both vibrating in the same direction upon striking the prism faces. Thus differential reflection at these faces is eliminated. The method was checked with carbon tetrachloride.

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