HgCdTe-based heterostructures for terahertz photonics

Abstract : Due to their specific physical properties, HgCdTe-based heterostructures are expected to play an important role in terahertz photonic systems. Here, focusing on gated devices presenting inverted band ordering, we evidence an enhancement of the terahertz photoconductive response close to the charge neutrality point and at the magnetic field driven topological phase transition. We also show the ability of these heterostructures to be used as terahertz imagers. Regarding terahertz emitters, we present results on stimulated emission of HgCdTe heterostructures in their conventional semiconductor state above 30 THz, discussing the physical mechanisms involved and promising routes towards the 5–15 THz frequency domain.
Type de document :
Article dans une revue
APL MATERIALS, 2017, 5 (3), pp.035503. 〈10.1063/1.4977781〉
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Soumis le : mardi 16 mai 2017 - 10:09:19
Dernière modification le : mardi 10 octobre 2017 - 11:01:12




Sandra Ruffenach, Aleksandr Kadykov, V. V. Rumyantsev, J. Torres, Dominique Coquillat, et al.. HgCdTe-based heterostructures for terahertz photonics. APL MATERIALS, 2017, 5 (3), pp.035503. 〈10.1063/1.4977781〉. 〈hal-01523131〉



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