Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1364/OE.416132

Аннотация: We investigate optical Tamm states supported by a dielectric grating placed on top of a distributed Bragg reflector. It is found that under certain conditions the Tamm state may become a bound state in the continuum. The bound state, in its turn, induces the effect of critical coupling with the reflectance amplitude reaching an exact zero. We demonstrate that the critical coupling point is located in the core of a vortex of the reflection amplitude gradient in the space of the wavelength and angle of incidence. The emergence of the vortex is explained by the coupled mode theory. © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Журнал: Optics Express

Выпуск журнала: Vol. 29, Is. 3

Номера страниц: 4672-4680

ISSN журнала: 10944087

Издатель: OSA - The Optical Society

• Bikbaev Rashid G. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
• Maksimov Dmitrii N. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
• Pankin Pavel S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
• Chen Kuo-Ping (Natl Chiao Tung Univ, Inst Imaging & Biomed Photon, Tainan 71150, Taiwan)
• Timofeev Ivan (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)

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