Birefringent whispering gallery cavities designed by linear transformation optics | Zendy

Sang-Jun Park | Zendy; Ji-Hun Lim | Zendy; Yong-Hoon Lee | Zendy; Inbo Kim | Zendy; Jinhang Cho | Zendy; Sunghwan Rim | Zendy; Muhan Choi | Zendy

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Birefringent whispering gallery cavities designed by linear transformation optics

Author(s) -

Sang-Jun Park,

Ji-Hun Lim,

Yong-Hoon Lee,

Inbo Kim,

Jinhang Cho,

Sunghwan Rim,

Muhan Choi

Publication year - 2021

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.417744

Subject(s) - whispering gallery wave , optics , physics , transformation optics , whispering gallery , conformal map , transformation (genetics) , resonator , metamaterial , geometry , mathematics , biochemistry , chemistry , gene

It was reported that whispering gallery cavities designed by conformal transformation optics can support high-Q resonant modes with emission directionality. Intrinsically, these cavities have gradient index profiles implementing conformal mappings in physical space. In this paper, using the linear coordinate transformation, we propose another design scheme of whispering gallery cavities with (piecewise-) homogeneous, anisotropic index profile. We numerically show that so-designed cavities are also able to support high-Q whispering gallery modes with directional far-field emission patterns. We verify such characteristics by using a phase space representation (called the Poincaré Husimi function) of the intracavity wave function.

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