Broadband pyramid antireflective structure on chalcogenide glasses by the hot embossing method for infrared photonics

Lizhu Li, Julien Ari, Pierre A. Deymier, Pierre Lucas

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Pyramidal antireflective structures were produced by hot embossing single- and double-sides of an amorphous GeSe4 optical element. The optical performances were measured across the wavelength range from 2 µm to 15 µm. The transmittance at normal incident angle was increased up to 75.6% and 79.8% for single and double-side embossing respectively. The experimental results were in close agreement with simulation performed using the rigorous coupled-wave analysis (RCWA). Theoretical models also predicted well the transmittance changes as a function of incident angle from 0 ° to 50 ° at a fixed laser wavelength of 5.1 µm. A Fabry-Perot interferometer consisting of two single surface embossed samples is proposed.

Original languageEnglish (US)
Pages (from-to)1638-1647
Number of pages10
JournalOptical Materials Express
Volume12
Issue number4
DOIs
StatePublished - Apr 1 2022

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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