Entropic measure of directional emissions in microcavity lasers
Kyu-Won Park,
Chang-Hyun Ju,
Kabgyun Jeong
Abstract:We propose a noble notion of the directional emission in microcavity lasers. First, Shannon entropy of the far-field profiles in the polar coordinate can quantify the degree of unidirectionality of the emission, while previous notions about the unidirectionality can not efficiently measure in the robust range against a variation of the deformation parameter. Second, a divergence angle of the directional emission is defined phenomenologically in terms of full width at half maximum, and it is barely applicable t… Show more
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