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논문 기본 정보

자료유형
학술저널
저자정보
Sunkyu Yu (Seoul National University) Xianji Piao (Seoul National University) Namkyoo Park (Seoul National University)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.3 No.4
발행연도
2019.8
수록면
275 - 284 (10page)

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Chirality is ubiquitous in physics and biology from microscopic to macroscopic phenomena, such as fermionic interactions and DNA duplication. In photonics, chirality has traditionally represented differentiated optical responses for right and left circular polarizations. This definition of optical chirality in the polarization domain includes handedness-dependent phase velocities or optical absorption inside chiral media, which enable polarimetry for measuring the material concentration and circular dichroism spectroscopy for sensing biological or chemical enantiomers. Recently, the emerging field of non-Hermitian photonics, which explores exotic phenomena in gain or loss media, has provided a new viewpoint on chirality in photonics that is not restricted to the traditional polarization domain but is extended to other physical quantities such as the orbital angular momentum, propagation direction, and system parameter space. Here, we introduce recent milestones in chiral light-matter interactions in non-Hermitian photonics and show an enhanced degree of design freedom in photonic devices for spin and orbital angular momenta, directionality, and asymmetric modal conversion.

목차

I. INTRODUCTION
II. CHIRAL POLARIZATIONS
III. CHIRAL WAVEFRONT
IV. CHIRAL PROPAGATION
V. CHIRAL GEOMETRIC PHASE
VI. CONCLUSION AND OUTLOOK
REFERENCES

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