What is the best planar cavity for maximizing coherent exciton-photon coupling

Wang, Zhaorong; Gogna, Rahul; Deng, Hui

doi:10.1063/1.4997171

Cited by 9 publications

(3 citation statements)

References 39 publications

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“…Hence, in applications relating to strong light−matter coupling and VSC in particular, DBR's often yield a lower Rabi splitting compared to metallic mirrors. 26 Metal mirrors such as Au by virtue of their large extinction coefficient generate microcavities with better optical confine- ment of the electromagnetic fields and therefore larger Rabi splitting. On the other hand, their lower reflectivity compared to the DBRs leads to lower Q microcavities and higher rates of polariton dephasing.…”

Section: ■ Introductionmentioning

confidence: 99%

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Vibrational Strong Light–Matter Coupling in an Open Microcavity Based on Reflective Germanium Coatings

Yitzhari¹,

Kapon²,

Tischler³

2022

J. Phys. Chem. A

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Open microcavities (OMCs) enable tuning of the optical resonances of a system and insertion of different materials between the mirrors. They are of large scientific interest due to their many potential applications. Using OMCs, we can observe strong light–matter coupling while tuning the cavity wavelength. Typically, dielectric Bragg reflectors (DBRs) and Au mirrors are used to form microcavities and observe vibrational strong coupling (VSC) in the middle-infrared (MIR) spectral region. Here, we make the mirrors of the OMC using thin film coatings of the semiconducting material germanium (Ge) and demonstrate VSC in the MIR region. We deposited a uniform coating of poly(methyl methacrylate) (PMMA) on one of the OMC mirrors’ inner surfaces, and then we tuned the cavity to the carbonyl stretch mode resonance at 1731 cm–1. Comparing VSC using Ge mirrors to DBRs or Au mirrors, we achieve enhanced optical transmission through the polaritonic resonances and large Rabi splitting, with Rabi-splitting values of 8.8 meV for the Ge mirror-based OMC compared to 7.0 and 7.4 meV for the DBR- and Au-based microcavities, respectively. The use of Ge mirror components can simplify the microcavity structure and offer a new and simple alternative for MIR semiconductor mirrors, which may be particularly useful for polariton chemistry applications.

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Section: ■ Introductionmentioning

confidence: 99%

“…However, DBRs poorly confine light, with light penetrating usually much more than λ/2 into the mirror structure, depending on refractive-index contrast. Hence, in applications relating to strong light–matter coupling and VSC in particular, DBR’s often yield a lower Rabi splitting compared to metallic mirrors …”

Section: Introductionmentioning

confidence: 99%

Vibrational Strong Light–Matter Coupling in an Open Microcavity Based on Reflective Germanium Coatings

Yitzhari¹,

Kapon²,

Tischler³

2022

J. Phys. Chem. A

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“…[20] Due to the strong field confinement of TPPs, it would also be a suitable structure for investigating the effect of Rabi splitting as well as the performance of strong coupling. [21][22][23][24][25][26] Under strong coupling conditions, TPP and excitons will form a new quasi-particle-Tamm plasmon excitonpolariton. Compared with excitons, its equivalent mass is smaller, so it is easier to form Bose-Einstein condensation than excitons.…”

Section: Introductionmentioning

confidence: 99%

Tamm Plasmon‐Polariton Ultraviolet Lasers

Chou

Yang

et al. 2021

Advanced Photonics Research

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The ZnO-based Tamm plasmon-polariton (TPP) ultraviolet laser is realized with the strong electric field confinement in the active layer. A coupling between TPPs and photons with a Rabi splitting of %30 meV is observed at room temperature. Furthermore, the TPP lasing at 373 nm is clearly observed by optical pumping. The corresponding lasing characteristics, such as threshold energy, linewidth, and angular dispersion curve are verified. These results form a basis for better understanding of the TPPs lasing mechanisms.

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