Dielectric thermonanophotonics

 

Optical heating of nanostructures has applications in a number of fields related to chemistry, biology and medicine: for thermal control of chemical reactions, targeted drug delivery, photothermal imaging of biological objects, etc.

Semiconductor and dielectric materials can have large thermo-optic coefficients, which allows observing optical nonlinear effects associated with heating of resonant nanostructures. In addition, in semiconductor materials, the ohmic losses responsible for optical heating can vary over a wide range. These factors, well studied in bulk materials, strongly modify the properties of nonmetallic subwavelength resonators and allow effective control of the parameters of meta-atoms and metasurfaces, such as tuning the directional pattern of a nonlinear signal. The conditions of the most effective heating require a self-consistent problem, which makes their study a non-trivial and interesting issue, and leads to interesting modes of operation, so for example, the bistability mode can be achieved.

 

Staff

Publications

2022

2021

3.
Opto-thermally controlled beam steering in nonlinear all-dielectric metastructures
[DOI:
10.1364/oe.440564
] [ IF:
3.833
, SJR:
1.233
]

2017

2012

1.
Alexander Krasnok
A.E. Miroshnichenko
, vol.
20
, pp.
20599-20604
, 2012
[DOI:
10.1364/OE.20.020599
] [ IF:
3.546
, SJR:
2.562
]