Optical defect mode with tunable Q factor in a one-dimensional anisotropic photonic crystal : сборник научных трудов

Описание

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1103/PhysRevB.97.024306

Аннотация: We consider a one-dimensional photonic crystal composed of alternating layers of isotropic and anisotropic dielectricmaterials. Such a system has different band structures for different polarizations of light. We demonstrate that if a defect layer is inserted into the structure, the crystal can support a polarized optical defect moПоказать полностьюde that is a bound state in the continuum (BIC). In the case of an anisotropic defect layer, by tilting the principle dielectric axes of the defect layer relative to those of the photonic crystal the BIC is transformed to a quasi-BIC. We derive an analytical expression for the decay rate of the resonance. An experimental setup with a liquid crystal defect layer is proposed to tune the Q factor of the quasi-BIC through applying an external electric field. We speculate that the setup provides a simple and robust platform for observing optical bound states in the continuum in the form of resonances with tunable Q factor.

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Издание

Журнал: PHYSICAL REVIEW B

Выпуск журнала: Vol. 97, Is. 2

Номера страниц: 24306

ISSN журнала: 24699950

Место издания: COLLEGE PK

Издатель: AMER PHYSICAL SOC

Авторы

  • Timofeev Ivan V. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia)
  • Maksimov Dmitrii N. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia)
  • Sadreev Almas F. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)

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