The diffraction of light by high frequency sound waves. Part V. General considerations oblique incidence and amplitude changes

Abstract

The essential idea that the phenomenon of the diffraction of light by high frequency sound waves depends on the corrugated nature of the transmitted wave-front of light has been developed on general considerations in this paper to apply for the case of the oblique incidence of the incident light to the sound waves. It is found that the intensity distribution will hot be symmetrical in general thus explaining the results of Debye and Sears, Lucas and Biquard, Bar and Parthasarathy. The consideration of the amplitude changes of the traversing beam of light explains the results of Hiedemann, Bar and Lucas. We are highly thankful to Prof. Dr. R. Bar of Zurich for having kindly sent us a copy of the proof of a paper by him describing experimental tests of our theory which is now in course of publication in the Helvetica Physica Acta.