Scalar Readout Model for Super-Rens Focused Spot

A. C. Assafrao; S. F. Pereira; H. P. Urbach

doi:10.2971/jeos.2011.11056

Journal of the European Optical Society - Rapid publications, Vol 6 (2011)

Scalar Readout Model for Super-Rens Focused Spot

A. C. Assafrao, S. F. Pereira, H. P. Urbach

Abstract

A scalar readout model is presented to investigate the readout characteristics of the super resolution near field (SRens) disc. The super resolution effect is described by means of a threshold model, where the super resolution material imparts a phase change on the focused spot if the laser density energy is high enough to trigger the SRens effect. This approach results in a very fast way of computing the basic characteristics of the SRens readout signal, being suitable for large investigations. Moreover, many simulation results have been experimentally confirmed by other groups, which further validates the model. Thus, this simplified model is an useful tool for a better comprehension of the readout signal of the super resolution effect in optical data storage and other super resolution applications.

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