Contribution of Bound States to the Harmonic Generation in Hydrogen at Moderate Laser Intensities

2002 ◽  
Author(s):  
Jack Davis ◽  
Milan Blaha
Keyword(s):  
Harmonic Generation ◽  
Bound States

Silicon metasurfaces with bound states in the continuum for high-harmonic generation

2021 ◽  
Author(s):  
Kirill L. Koshelev ◽  
George Zograf ◽  
Viacheslav Korolev ◽  
Anastasia Zalogina ◽  
Duk-Yong Choi ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Bound States ◽  
High Harmonic ◽  
High Harmonic Generation ◽  
The Continuum

scholarly journals Significantly enhanced second-harmonic generations with all-dielectric antenna array working in the quasi-bound states in the continuum and excited by linearly polarized plane waves

Nanophotonics ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhanghua Han ◽  
Fei Ding ◽  
Yangjian Cai ◽  
Uriel Levy
Keyword(s):  
Second Harmonic Generation ◽  
Magnetic Dipole ◽  
Harmonic Generation ◽  
Bound States ◽  
Second Harmonic ◽  
Generation Efficiency ◽  
Second Harmonic Generation Efficiency ◽  
Linearly Polarized ◽  
Magnetic Dipole Resonances ◽  
The Continuum

AbstractThe recently emerging all-dielectric optical nanoantennas based on high-index semiconductors have proven to be an effective and low-loss alternative to metal-based plasmonic structures for light control and manipulations of light–matter interactions. Nonlinear optical effects have been widely investigated to employ the enhanced interactions between incident light and the dielectrics at the Mie-type resonances, and in particular magnetic dipole resonances, which are supported by the semiconductor. In this paper, we explore the novel phenomenon of bound states in the continuum supported by high-index semiconductor nanostructures. By carefully designing an array of nanodisk structures with an inner air slot as the defect, we show that a novel high quality-factor resonance achieved based on the concept of bound state in the continuum can be easily excited by the simplest linearly polarized plane wave at normal incidence. This resonance further enhances the interactions between light and semiconductors and boosts the nonlinear effects. Using AlGaAs as the nonlinear material, we demonstrate a significant increase in the second-harmonic generation efficiency, up to six orders of magnitude higher than that achieved by magnetic dipole resonances. In particular, a second-harmonic generation efficiency around 10% can be numerically achieved at a moderate incident pump intensity of 5 MW/cm2.

Role of the bound states in below-threshold harmonic generation of Cs atom

2020 ◽  
Author(s):  
Zhi-Bin Wang ◽  
Chun-Xiang Guo ◽  
Zhi-Hong Jiao ◽  
Peng-Cheng Li ◽  
Shih-I Chu
Keyword(s):  
Harmonic Generation ◽  
Bound States

High-Harmonic Generation in Dielectric Metasurfaces Empowered by Bound States in the Continuum

2020 ◽  
Author(s):  
George Zograf ◽  
Anastasia Zalogina ◽  
Kirill Koshelev ◽  
Duk-Yong Choi ◽  
Viacheslav Korolev ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Bound States ◽  
High Harmonic ◽  
High Harmonic Generation ◽  
The Continuum
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