Cavity modes of exciton–polaritons in an organic crystal with distributed Bragg reflectors

Kondo, Hisao; Takeda, Atsushi; Tomikawa, Takehiko; Kurisu, Hiroki; Yamamoto, S.; Matsuura, M.

doi:10.1016/j.jlumin.2005.12.021

Cited by 10 publications

(11 citation statements)

References 7 publications

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“…The transmission spectra of this microcavity show an obvious polarization dependence attributable to the anisotropy of the anthracene single crystal. In the present study, the cavity polariton dispersion in the thin anthracene film is determined from linearpolarized transmittance measurements, and the result is used to estimate the vacuum Rabi splitting energy for this system.Details of the fabrication of the anthracene microcavity have been reported previously [5]. The film thickness examined is less than 0.1 mm in thickness, which allows us to measure reliable transmittance even in the absorption region over the exciton energy.…”

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confidence: 99%

“…Details of the fabrication of the anthracene microcavity have been reported previously [5]. The film thickness examined is less than 0.1 mm in thickness, which allows us to measure reliable transmittance even in the absorption region over the exciton energy.…”

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confidence: 99%

“…The present authors have been investigating the anisotropic feature using a newly developed microcavity composed of a single-crystalline anthracene film. The film is sandwiched between two distributed Bragg reflectors (DBRs) consisting of HfO 2 and SiO 2 [5]. In the microcavity, the (0 0 1) face in the anthracene crystal is parallel to the DBR surfaces.…”

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confidence: 99%

“…Thickness of anthracene film was determined by numerical fitting of transmission spectra on the basis of the transfer matrix theory (TMT) [8]. The refractive index of anthracene for the TMT calculation is determined from the bulk polariton dispersion in the lower polariton region using a one-oscillator polariton model [5,6]:…”

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Optical responses in single-crystalline organic microcavities

Kondo

Yamamoto

Takeda

et al. 2008

Journal of Luminescence

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Optical responses in single-crystalline organic microcavities

Kondo

Yamamoto

Takeda

et al. 2008

Journal of Luminescence

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“…Consequently, we developed the organic microcavity composed of a single crystalline anthracene film [4,5]. Since anthracene belonging to monoclinic system is biaxial crystal, it shows intensively anisotropic response.…”

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Cavity polariton dispersion of a single‐crystalline anthracene film embedded in a microcavity

Kondo

Tongu

Yamamoto

et al. 2008

Phys. Status Solidi (c)

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We study anisotropic behavior of cavity polaritons in an organic microcavity composed of a single crystalline anthracene film grown into the gap of the Fabry‐Perot cavity by a method through capillary action. The anisotropic response of the cavity polariton appeared on the spectra depending on the linear polarized directions; two kinds of the polarization correspond to the principal axes of anthracene crystal. Transmission spectra were measured with various thickness of the anthracene film. The peak‐shift of the lower polariton mode depending on the thickness was obviously observed, whereas that of the upper polariton mode was not clearly observed be cause of the complicated shape of the spectra. This behavior for the upper polariton mode was analyzed on the basis of the convolution between the spectra of the cavity mode and the absorption due to the vibronic transition in anthracene. Cavity‐polariton dispersion as a function of thickness was obtained from peak‐shift on the spectra. Each thickness was determined by spectral fitting through calculation using the transfer matrix theory. Large vacuum Rabi splitting energies of this system were obtained from the dispersion as 0.20 and 0.34 eV for two kinds of the polarizations. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Exciton–Polaritons in Organic Semiconductor Optical Microcavities

Kéna‐Cohen

Forrest

2012

Exciton Polaritons in Microcavities

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The coupling between a 2D semiconductor quantum well and an optical cavity gives rise to combined light-matter excitations, the exciton-polaritons. These were usually measured when the conduction band is empty, making the single polariton physics a simple single-body problem. The situation is dramatically different in the presence of a finite conduction band population, where the creation or annihilation of a single exciton involves a many-body shakeup of the Fermi sea. Recent experiments in this regime revealed a strong modification of the exciton-polariton spectrum. Previous theoretical studies concerned with nonzero Fermi energy mostly relied on the approximation of an immobile valence band hole with infinite mass, which is appropriate for low-mobility samples only; for high-mobility samples, one needs to consider a mobile hole with large but finite mass. To bridge this gap we present an analytical diagrammatic approach and tackle a model with short-ranged (screened) electron-hole interaction, studying it in two complementary regimes. We find that the finite hole mass has opposite effects on the exciton-polariton spectra in the two regimes: In the first, where the Fermi energy is much smaller than the exciton binding energy, excitonic features are enhanced by the finite mass. In the second regime, where the Fermi energy is much larger than the exciton binding energy, finite mass effects cut off the excitonic features in the polariton spectra, in qualitative agreement with recent experiments.

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Cavity modes of exciton–polaritons in an organic crystal with distributed Bragg reflectors

Cited by 10 publications

References 7 publications

Optical responses in single-crystalline organic microcavities

Optical responses in single-crystalline organic microcavities

Cavity polariton dispersion of a single‐crystalline anthracene film embedded in a microcavity

Exciton–Polaritons in Organic Semiconductor Optical Microcavities

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