Doping of resonant silicon nanodisks for efficient optical heating in the near-infrared range. (March 2020)

• Record Type: Journal Article
• Authors: Zograf, George; Makarov, Sergey; Petrov, Mihail
• Is Part Of: Journal of physics. Volume 1460(2020)
• Publication Date: 2020-03
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1461/1/012201
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: All-dielectric nanophotonics attracted high interest during last years in the field of thermal applications and optical heating mainly due to the ability of electromagnetic field localization inside the nanostructures due to different resonant modes excitation. However, most conventional dielectrics and semiconductors (e.g. silicon, germanium etc.) are transparent in the near-IR, and, thus, optical heating in this region becomes a challenging task. In this work, we reveal that carrier doping can significantly increase optical heating of a resonant silicon nanodisk, without changing its optical properties dramatically. In addition, semiconductor nanostructures support high-Q thermally responsive Raman signal, which can be used as the temperature sensor at the nanoscale. We believe, that such approach might be very effective for numbers of applications, including bio-medical ones, by working in the'biological tissue window'.