Generalized theory of interference, and its applications

@article{Pancharatnam1956GeneralizedTO,
  title={Generalized theory of interference, and its applications},
  author={S. Pancharatnam},
  journal={Proceedings of the Indian Academy of Sciences - Section A},
  year={1956},
  volume={44},
  pages={247-262}
}
  • S. Pancharatnam
  • Published 1 November 1956
  • Physics
  • Proceedings of the Indian Academy of Sciences - Section A
SummaryThe superposition of two coherent beams in different states of elliptic polarisation is discussed in a general manner. If A and B represent the states of polarisation of the given beams on the Poincaré sphere, and C that of the resultant beam, the result is simply expressed in terms of the sides,a, b, c of the spherical triangle ABC. The intensity I of the resultant beam is given by: $$I = I_1 + I_2 + 2 \sqrt {I_1 I_2 } \cos \raise.5ex\hbox{$\scriptstyle 1$}\kern-.1em/ \kern-.15em\lower… 
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