Home > Research > Publications & Outputs > Modal Purcell factor in PT -symmetric waveguides

Research

Links

Text available via DOI:

View graph of relations

Modal Purcell factor in PT -symmetric waveguides

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

Modal Purcell factor in PT -symmetric waveguides. / Morozko, Fyodor; Novitsky, Andrey; Karabchevsky, Alina.
In: Physical Review B, Vol. 102, No. 15, 155303, 15.10.2020.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Morozko, F, Novitsky, A & Karabchevsky, A 2020, 'Modal Purcell factor in PT -symmetric waveguides', Physical Review B, vol. 102, no. 15, 155303. https://doi.org/10.1103/PhysRevB.102.155303

APA

Morozko, F., Novitsky, A., & Karabchevsky, A. (2020). Modal Purcell factor in PT -symmetric waveguides. Physical Review B, 102(15), Article 155303. https://doi.org/10.1103/PhysRevB.102.155303

Vancouver

Morozko F, Novitsky A, Karabchevsky A. Modal Purcell factor in PT -symmetric waveguides. Physical Review B. 2020 Oct 15;102(15):155303. Epub 2020 Oct 14. doi: 10.1103/PhysRevB.102.155303

Author

Morozko, Fyodor ; Novitsky, Andrey ; Karabchevsky, Alina. / Modal Purcell factor in PT -symmetric waveguides. In: Physical Review B. 2020 ; Vol. 102, No. 15.

Bibtex

@article{af24dade91ca45c0a888c2a27e842538,
title = "Modal Purcell factor in PT -symmetric waveguides",
abstract = "We study the spontaneous emission rate of a dipole emitter in PT-symmetric environment of two coupled waveguides using the reciprocity approach generalized to nonorthogonal eigenmodes of non-Hermitian systems. Considering emission to the guided modes, we define and calculate the modal Purcell factor composed of contributions of independent and interfering nonorthogonal modes leading to the emergence of cross-mode terms in the Purcell factor. We reveal that the closed-form expression for the modal Purcell factor within the coupled mode theory slightly alters for the non-Hermitian coupled waveguide compared to the Hermitian case. It is true even near the exceptional point, where the eigenmodes coalesce and the Petermann factor goes to infinity. This result is fully confirmed by the numerical simulations of active and passive PT-symmetric systems being the consequence of the mode nonorthogonality.",
author = "Fyodor Morozko and Andrey Novitsky and Alina Karabchevsky",
year = "2020",
month = oct,
day = "15",
doi = "10.1103/PhysRevB.102.155303",
language = "English",
volume = "102",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society (APS)",
number = "15",

}

RIS

TY - JOUR

T1 - Modal Purcell factor in PT -symmetric waveguides

AU - Morozko, Fyodor

AU - Novitsky, Andrey

AU - Karabchevsky, Alina

PY - 2020/10/15

Y1 - 2020/10/15

N2 - We study the spontaneous emission rate of a dipole emitter in PT-symmetric environment of two coupled waveguides using the reciprocity approach generalized to nonorthogonal eigenmodes of non-Hermitian systems. Considering emission to the guided modes, we define and calculate the modal Purcell factor composed of contributions of independent and interfering nonorthogonal modes leading to the emergence of cross-mode terms in the Purcell factor. We reveal that the closed-form expression for the modal Purcell factor within the coupled mode theory slightly alters for the non-Hermitian coupled waveguide compared to the Hermitian case. It is true even near the exceptional point, where the eigenmodes coalesce and the Petermann factor goes to infinity. This result is fully confirmed by the numerical simulations of active and passive PT-symmetric systems being the consequence of the mode nonorthogonality.

AB - We study the spontaneous emission rate of a dipole emitter in PT-symmetric environment of two coupled waveguides using the reciprocity approach generalized to nonorthogonal eigenmodes of non-Hermitian systems. Considering emission to the guided modes, we define and calculate the modal Purcell factor composed of contributions of independent and interfering nonorthogonal modes leading to the emergence of cross-mode terms in the Purcell factor. We reveal that the closed-form expression for the modal Purcell factor within the coupled mode theory slightly alters for the non-Hermitian coupled waveguide compared to the Hermitian case. It is true even near the exceptional point, where the eigenmodes coalesce and the Petermann factor goes to infinity. This result is fully confirmed by the numerical simulations of active and passive PT-symmetric systems being the consequence of the mode nonorthogonality.

U2 - 10.1103/PhysRevB.102.155303

DO - 10.1103/PhysRevB.102.155303

M3 - Journal article

VL - 102

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 15

M1 - 155303

ER -