Planar Chirality and Optical Spin–Orbit Coupling for Chiral Fabry–Perot Cavities

Gautier, Jérôme; Li, Minghao; Ebbesen, Thomas W.; Genet, Cyriaque

doi:10.1021/acsphotonics.1c00780

Cited by 24 publications

(32 citation statements)

References 34 publications

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“…And mirror symmetry is obviously broken in cavities with chiral stuctures, like the ones recently reported in Ref. [49] As a further outlook, we note that the optical fine structure contains information on the mirror shape down to sub-nm precision. It can thus in principle be used to inspect these shapes, without the need to dismount the mirrors and inspect them by AFM or optical interference.…”

Section: Discussionsupporting

confidence: 69%

Fabry-Perot microcavity spectra have a fine structure

Exter¹,

Wubs²,

Hissink³

et al. 2022

Preprint

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Optical cavities can support many transverse and longitudinal modes. A paraxial scalar theory predicts that the resonance frequencies of these modes cluster in different orders. A non-paraxial vector theory predicts that the frequency degeneracy within these clusters is lifted, such that each order acquires a spectral fine structure, comparable to the fine structure observed in atomic spectra. In this paper, we calculate this fine structure for microcavities and show how it originates from various non-paraxial effects and is co-determined by mirror aberrations. The presented theory, which applies perturbation theory to Maxwell's equations with boundary conditions, proves to be very powerful. It generalizes the effective 1-dimensional description of Fabry-Perot cavities to a 3dimensional multi-transverse-mode description. It thereby provides new physical insights in several mode-shaping effects and a detailed prediction of the fine structure in Fabry-Perot spectra.

show abstract

Section: Discussionsupporting

confidence: 69%

Fabry-Perot microcavity spectra have a fine structure

Exter¹,

Wubs²,

Hissink³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…And mirror symmetry is obviously broken in cavities with chiral stuctures, like the ones recently reported in Ref. [49].…”

Section: Discussionmentioning

confidence: 69%

Fine structure in Fabry-Perot microcavity spectra

Exter

Wubs²,

Hissink³

et al. 2022

Phys. Rev. A

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Optical cavities can support many transverse and longitudinal modes. A paraxial scalar theory predicts that the resonance frequencies of these modes cluster in different orders. A nonparaxial vector theory predicts that the frequency degeneracy within these clusters is lifted, such that each order acquires a spectral fine structure, comparable to the fine structure observed in atomic spectra. In this paper, we calculate this fine structure for microcavities and show how it originates from various nonparaxial effects and is codetermined by mirror aberrations. The presented theory, which applies perturbation theory to Maxwell's equations with boundary conditions, proves to be very powerful. It generalizes the effective one-dimensional description of Fabry-Perot cavities to a three-dimensional multi-transverse-mode description. It thereby provides physical insights into several mode-shaping effects and a detailed prediction of the fine structure in Fabry-Perot spectra.

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“…In this study, we show that CISS can be observed in achiral molecules and materials strongly coupled to a circularly polarized mode of an optical cavity − or waveguide. − Unlike ordinary CISS in chiral molecules, under the coupling of electrons to the optical mode, spin polarization can be non-zero without dephasing. This is because the light–matter interaction can effectively break the time-reversal symmetry in the dynamics of electrons, as demonstrated by an emergent non-zero phase acquired by electrons moving around a closed loop.…”

mentioning

confidence: 78%

Chiral-Induced Spin Selectivity in Photon-Coupled Achiral Matters

Phuc

2023

J. Phys. Chem. Lett.

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Chiral-induced spin selectivity is a phenomenon in which electron spins are polarized as they are transported through chiral molecules, and the spin polarization depends on the handedness of the chiral molecule. In this study, we show that spin selectivity can be realized in achiral materials by strongly coupling electrons to a circularly polarized mode of an optical cavity or waveguide. Through the investigation of spindependent electron transport in a two-terminal setup using the nonequilibrium Green's function approach, it is found that a large spin polarization can be obtained if the rate of dephasing is sufficiently small and the average chemical potential of the two leads is within an appropriate range of values, which is narrow because of the high frequency of the optical mode. To obtain a wider range of energies for a large spin polarization, chiral molecules can be combined with light−matter interactions. To demonstrate this, the spin polarization of electrons transported through a helical molecule strongly coupled to a circularly polarized optical mode is evaluated.

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Planar Chirality and Optical Spin–Orbit Coupling for Chiral Fabry–Perot Cavities

Cited by 24 publications

References 34 publications

Fabry-Perot microcavity spectra have a fine structure

Fabry-Perot microcavity spectra have a fine structure

Fine structure in Fabry-Perot microcavity spectra

Chiral-Induced Spin Selectivity in Photon-Coupled Achiral Matters

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