Overview of laser imprinted refractive index changes and related thermal stability in mid-infrared optical glasses

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-03-25 DOI:10.1016/j.optmat.2025.116985

Julien Ari , Yao Heng , Maxime Cavillon , Martin Bernier , Marc Dussauze , Matthieu Lancry

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Abstract

Various glass compositions adapted to mid-infrared (heavy metal oxide, fluoride and chalcogenide glasses) were irradiated by femtosecond laser and their refractive index variations characterized as a function of laser pulse energy. Their thermal stability was studied through isochronal annealing conditions in order to determine their erasure temperatures. The measured index variations were compared to values collected from literature for a broad range of glass candidates. Additional chalcogenide glasses studied in this article (e.g. GeSbS and 75GeS₂-15In₂S₃–10CsCl) present very high refractive index variations (up to 5.5·10⁻²), almost 3 times the maximum value reported in heavy metal oxide glasses (2·10⁻², Corning 9754) or SiO₂, bringing interest for the development of mid-infrared optical devices. Nevertheless, they can be limited by their relatively low thermal stability, since the refractive index variations fully erase around their glass transition temperatures (typ. 200–300 °C for chalcogenide glasses studied herein).

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.