Ultralow Dispersion Multicomponent Thin-Film Chalcogenide Glass for Broadband Gradient-Index Optics

Ultralow Dispersion Multicomponent Thin-Film Chalcogenide Glass for Broadband Gradient-Index Optics

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Détails bibliographiques
Publié dans:Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 39 vom: 18. Sept., Seite e1803628
Auteur principal: Kang, Myungkoo (Auteur)
Autres auteurs: Swisher, Andrew M, Pogrebnyakov, Alexej V, Liu, Liu, Kirk, Andrew, Aiken, Stephen, Sisken, Laura, Lonergan, Charmayne, Cook, Justin, Malendevych, Teodor, Kompan, Fedor, Divliansky, Ivan, Glebov, Leonid B, Richardson, Martin C, Rivero-Baleine, Clara, Pantano, Carlo G, Mayer, Theresa S, Richardson, Kathleen
Format: Article en ligne
Langue:English
Publié: 2018
Accès à la collection:Advanced materials (Deerfield Beach, Fla.)
Sujets:Journal Article achromatic microlenses chalcogenide glass gradient refractive index optical nanocomposites photothermal process
Description
Résumé:© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
A novel photothermal process to spatially modulate the concentration of sub-wavelength, high-index nanocrystals in a multicomponent Ge-As-Pb-Se chalcogenide glass thin film resulting in an optically functional infrared grating is demonstrated. The process results in the formation of an optical nanocomposite possessing ultralow dispersion over unprecedented bandwidth. The spatially tailored index and dispersion modification enables creation of arbitrary refractive index gradients. Sub-bandgap laser exposure generates a Pb-rich amorphous phase transforming on heat treatment to high-index crystal phases. Spatially varying nanocrystal density is controlled by laser dose and is correlated to index change, yielding local index modification to ≈+0.1 in the mid-infrared
Description:Date Completed 27.09.2018
Date Revised 01.10.2020
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201803628