TY - JOUR
T1 - High-harmonic generation at the nanoscale boosted by bound states in the continuum
AU - Carletti, Luca
AU - Kruk, Sergey S.
AU - Bogdanov, Andrey A.
AU - De Angelis, Costantino
AU - Kivshar, Yuri
N1 - Publisher Copyright:
© 2019 authors. Published by the American Physical Society.
PY - 2019/9
Y1 - 2019/9
N2 - Recent progress in nanoscale optics is driven by the physics of electric and magnetic resonances supported by high-index dielectric nanoparticles. Here, we exploit optical bound states in the continuum in a subwavelength particle enhanced by an engineered substrate undergoing an epsilon-near-zero transition from an insulator to a conductor, and uncover how to boost dramatically high-order parametric nonlinear effects. Our strategy makes feasible an observation of a variety of multistep cascaded and multifrequency nonlinear effects in an individual subwavelength resonator. This would expand substantially the range of applications of Mie-resonant dielectric metaphotonics for highly efficient subwavelength optical circuitry, nonlinear metadevices, ultrasensitive hyperspectral sensing, and quantum nanophotonics.
AB - Recent progress in nanoscale optics is driven by the physics of electric and magnetic resonances supported by high-index dielectric nanoparticles. Here, we exploit optical bound states in the continuum in a subwavelength particle enhanced by an engineered substrate undergoing an epsilon-near-zero transition from an insulator to a conductor, and uncover how to boost dramatically high-order parametric nonlinear effects. Our strategy makes feasible an observation of a variety of multistep cascaded and multifrequency nonlinear effects in an individual subwavelength resonator. This would expand substantially the range of applications of Mie-resonant dielectric metaphotonics for highly efficient subwavelength optical circuitry, nonlinear metadevices, ultrasensitive hyperspectral sensing, and quantum nanophotonics.
UR - http://www.scopus.com/inward/record.url?scp=85106675096&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.1.023016
DO - 10.1103/PhysRevResearch.1.023016
M3 - Article
SN - 2643-1564
VL - 1
JO - Physical Review Research
JF - Physical Review Research
IS - 2
M1 - 023016
ER -