Performance of long-wave infrared band of microstructured heavily doped InAsSb on type II superlattice layer part 1: the photonic study

This article deals with the optical study of nanostructured components which absorb light across the entire long-wave infrared (LWIR) spectral band. The components are made of type-II superlattice (T2SL) absorber and highly doped InAsSb, the latter being nanostructured to ensure multiple resonances....

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Bibliographic Details
Published in:Optics express 2024-04, Vol.32 (8), p.13438-13449
Main Authors: Gureghian, Clément, Rodriguez, Jean-Baptiste, Dupuis, Christophe, Bardou, Nathalie, Ferlazzo, Laurence, Ribet, Isabelle, Gonzalez-Posada, Fernando, Taliercio, Thierry, Vincent, Grégory
Format: Article
Language:English
Subjects:
Optics
Physics
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Summary:This article deals with the optical study of nanostructured components which absorb light across the entire long-wave infrared (LWIR) spectral band. The components are made of type-II superlattice (T2SL) absorber and highly doped InAsSb, the latter being nanostructured to ensure multiple resonances. We studied two components: in the first one, the T2SL has a thickness of 1.6 μm, and in the second its thickness is 300 nm. The calculated absorption spectra were shown and the components revealed high absorption thanks to optical resonance and high angular acceptance. A fabrication process has been developed, and optical measurements have confirmed the reliability of the model.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.516043