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Article Dans Une Revue Applied optics Année : 2022

Broadband high-contrast visible optical switches based on a spin-crossover material

Stéphane Calvez
Henri Camon
Karl Ridier
Gábor Molnár
Olivier Gauthier-Lafaye

Résumé

Visible optical switches embedding a spin-crossover thin film and exploiting frustrated total internal reflection operation principle are studied and optimized numerically with a view to obtain broadband high-contrast devices. A practical implementation using uncoated SF11 prisms embedding a 1-µm-thick layer of iron-triazolyl-borate complex as the thermo-active phase-change material is shown to support p-polarized modulation with a contrast in excess of 90% over a spectral bandwidth greater than 270 nm and over an angular acceptance bandwidth of 0.45°, surpassing the performance achievable with optically-resonant devices.
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Dates et versions

hal-03841636 , version 1 (07-11-2022)

Identifiants

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Stéphane Calvez, Henri Camon, Karl Ridier, Gábor Molnár, Olivier Gauthier-Lafaye. Broadband high-contrast visible optical switches based on a spin-crossover material. Applied optics, 2022, 61 (32), pp.9562. ⟨10.1364/ao.473176⟩. ⟨hal-03841636⟩
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