Efficient second harmonic generation in a doubly resonant photonic crystal cavity based on a bound state in the continuum

Wang, Jun; Clementi, Marco; Barone, Andrea; Minkov, Momchil; Carlin, J.-F.; Grandjean, N.; Fan, Shanhui; Houdré, R.; Gerace, Dario; Galli, Mattéo

doi:10.1109/ipc47351.2020.9252325

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2023

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the geometric phase also exists in the momentum space of a periodic structure such as photonic crystal (PhC) slab, vortex beams can be generated using a PhC slab, and significant advances have been made in this field [15][16][17][18][19][20][21]. In 2014, Zhen et al demonstrated that in the momentum space of a PhC slab, the directional vector of the linearly polarized electric field around the bound state in the continuum (BIC) constitute a polarization vortex [22].…”

Section: Introductionmentioning

confidence: 99%

Superimposition of topological charges between vortex beams and singular points of photonic crystal slabs

Gao

Liu

et al. 2023

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Bound state in the continuum (BIC) is a singular point of polarization in momentum space of periodic structure. It has been demonstrated that vortex beams can be generated by utilizing the polarization vortex around BIC based on the geometric phase in momentum space. In this letter, we propose a reflective photonic crystal (PhC) to generate vortex beam and demonstrate the superimposition of topological charges in the momentum space between PhC and the vortex beams. In addition to BICs, we demonstrate that other singularities like degenerate point can also be used to generate vortex beams.

show abstract