Article

Encapsulation shape with non-rotational symmetry designed for extraction of polarized light from unpolarized sources

Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Троя, New York, United States
Optics Express (Impact Factor: 3.53). 09/2007; 15(16):10452-7. DOI: 10.1364/OE.15.010452
Source: PubMed

ABSTRACT A non-rotationally symmetric encapsulation shape - which takes advantage of the low reflection coefficient for transverse magnetic polarized light near Brewster's angle - designed to enhance extraction of a particular desired linear polarization from an unpolarized source is reported. The algorithm for optimization of the shape is described. Numerical ray-tracing simulations of the encapsulation shape are performed and predict an integrated enhancement of 8.3% in the ratio of desired polarization to undesired polarization when the refractive index of the encapsulant is 1.5. Experimental measurements of fabricated encapsulant shapes agree well with numerical predictions.

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