journal article·2013-04

Optics of microlenses created by irradiation of As2S3amorphous chalcogenide films with femtosecond laser pulses

M. Popescu, A. Velea, S. Miclos, D. Savastru

Philosophical Magazine Letters· Volume 93· Issue 4
Publisher page

Abstract

Arrays of microlenses have been created on the surface of thin amorphous films of As2S3 by localized photoexpansion induced by femtosecond laser pulses. The profile of a typical microlens has been mathematically described. Ray-tracing analysis has been performed to determine the focal points in the red and near-infrared spectrum of electromagnetic radiation. These lie at distances of 1.21 μm at λ = 650 nm and 1.33 μm at λ = 1.5 μm above the top of the microlens. It is suggested that the microlenses could be used in two-dimensional optoelectronic circuits or in fibre optics.
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Research context

OpenAlex topics: Phase-change materials and chalcogenides · Optical Polarization and Ellipsometry · Nonlinear Optical Materials Studies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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