GRIN materials for LWIR applications

Claire Fourmentin; Énora Lavanant; Florence De La Barrière; Guillaume Druart; Raphaël Proux; Mathieu Rozé; Yann Guimond; Xianghua Zhang; Laurent Calvez

doi:10.1117/12.3014153

7 June 2024 GRIN materials for LWIR applications

Claire Fourmentin, Énora Lavanant, Florence De La Barrière, Guillaume Druart, Raphaël Proux, Mathieu Rozé, Yann Guimond, Xianghua Zhang, Laurent Calvez

Author Affiliations +

Proceedings Volume 13042, Advanced Optics for Imaging Applications: UV through LWIR IX; 130420D (2024) https://doi.org/10.1117/12.3014153
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

GRIN materials can help compensate chromatic aberrations and enhance athermalization in an optical system, leading to more lightweight and compact lens assemblies, often with a lower number of elements. For several years, Umicore and ISCR in Rennes have developed GRIN materials for systems, using several approaches to modify the index in a chalcogenide glass. We will mention two of the most promising paths in this review: partial and spatially controlled crystallization by fast heating of the perimeter of a glass rod and ionic exchange which modifies locally the glass composition, leading to local changes in refractive index.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Claire Fourmentin, Énora Lavanant, Florence De La Barrière, Guillaume Druart, Raphaël Proux, Mathieu Rozé, Yann Guimond, Xianghua Zhang, and Laurent Calvez "GRIN materials for LWIR applications", Proc. SPIE 13042, Advanced Optics for Imaging Applications: UV through LWIR IX, 130420D (7 June 2024); https://doi.org/10.1117/12.3014153

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