1970•Journal of the Optical Society of AmericaRequires access

Beam Coupling to Films*

J. H. Harris, R. Shubert, J. N. Polky

Abstract

The coupling of a gaussian beam into thin films is investigated utilizing a full wave analysis. Maximum coupling efficiency for a planar structure is found to be 75% and is independent of the phase velocity of the waveguide mode in the film. Measured coupling values of up to 57% are reported. Coherence properties of the coupling procedure are discussed and optimization of physical parameters is outlined.

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Key concepts: Planar, Coupling (piping), Materials science, Optics, Coherence (philosophical gambling strategy), Thin film, Beam (structure), Gaussian beam