Multipolar second-harmonic generation from high- quasi-bic states in subwavelength resonators

HIGHLIGHTS

• who: Nanophotonics and collaborators from the Lei Xu: School of Engineering and Information Technology, University NS, UK have published the Article: Multipolar second-harmonic generation from high- quasi-BIC states in subwavelength resonators, in the Journal: (JOURNAL)
• what: The authors show that the formation of such trapped states associated with bound states in the continuum (quasi-BIC) can be understood through multipolar transformations of coupled leaky modes. The authors develop a comprehensive multipolar theory of the second-harmonic generation (SHG) from high-quality quasi-BIC states in an AlGaAs cylindrical nanoresonator (nanodisk). The authors show . . .
  

   

  

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