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1 August 2021 In3SbTe2 as a programmable nanophotonics material platform for the infrared
Andreas Hessler, Thomas Taubner
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Proceedings Volume 11796, Active Photonic Platforms XIII; 117961Y (2021) https://doi.org/10.1117/12.2594188
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
Conventionally, phase-change materials (PCMs) employed in active metasurfaces feature high optical contrast between their dielectric amorphous and crystalline phases. Here, we employ the non-volatile PCM In3SbTe2 (IST) which changes from dielectric to metallic upon crystallization in the whole infrared spectral range. We demonstrate the direct optical writing, erasing, and modifying of metallic IR nanoantennas in an IST thin-film, as well as switching from electric to magnetic dipole modes. We realize a tunable absorber and show nanoscale screening and “soldering” of pre-patterned meta-atoms. Our concepts enable rapid prototyping of infrared plasmonic meta-optics and may empower improved designs of programmable nanophotonic devices.
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Andreas Hessler and Thomas Taubner "In3SbTe2 as a programmable nanophotonics material platform for the infrared", Proc. SPIE 11796, Active Photonic Platforms XIII, 117961Y (1 August 2021); https://doi.org/10.1117/12.2594188
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KEYWORDS
Infrared radiation
Nanophotonics
Antennas
Crystals
Dielectrics
Plasmonics
Short wave infrared radiation
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