Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Bulgakov, Evgeny N"'
Autor:
Huang, Lujun, Jia, Bin, Pilipchuk, Artem S, Chiang, Yankei, Huang, Sibo, Li, Junfei, Shen, Chen, Bulgakov, Evgeny N, Deng, Fu, Powell, David A, Cummer, Steven A, Li, Yong, Sadreev, Almas F, Miroshnichenko, Andrey E
Bound states in the continuum (BICs) provide a viable way of achieving high-Q resonances in both photonics and acoustics. In this work, we proposed a general method of constructing Friedrich-Wintgen (FW) BICs and accidental BICs in a coupled acoustic
Externí odkaz:
http://arxiv.org/abs/2208.01396
Publikováno v:
Phys. Rev. A 102, 043518 (2020)
Optical coupling of two identical dielectric particles gives rise to bonding and anti-bonding resonances. The latter is featured by significant narrowing of the resonant width and strong enhancement of the $Q$ factor for the high index micron size pa
Externí odkaz:
http://arxiv.org/abs/2008.05360
Publikováno v:
Phys. Rev. A 102, 033511 (2020)
We consider light scattering by dielectric gratings supporting optical bound states in the continuum. Due to the presence of instantaneous Kerr nonlinearity the critical field enhancement in the spectral vicinity of the bound state triggers the effec
Externí odkaz:
http://arxiv.org/abs/2005.13984
We consider nonlinear effects in scattering of light by a periodic structure supporting optical bound states in the continuum. In the spectral vicinity of the bound states the scattered electromagnetic field is resonantly enhanced triggering optical
Externí odkaz:
http://arxiv.org/abs/1902.05782
Publikováno v:
Phys. Rev. A 98, 053840 (2018)
We consider bound states in the continuum (BICs) in low-contrast dielectric gratings (DGs). It is demonstrated that the BICs originate from the reduced guided modes on the effective dielectric slab with the permittivity equal to the average permittiv
Externí odkaz:
http://arxiv.org/abs/1808.03180
We consider optical response induced by bound states in the continuum (BICs) in arrays of dielectric spheres. By combining quasi-mode expansion technique with coupled mode theory (CMT) we put forward a theory of the optical response by high-Q resonan
Externí odkaz:
http://arxiv.org/abs/1805.08036
Autor:
Bulgakov, Evgeny N., Sadreev, Almas F.
Publikováno v:
Phys. Rev. B 98, 085301 (2018)
We show that a circular periodic array of $N$ dielectric cylinders supports nearly bound states in the continuum (BICs) propagating along the cylinders. These propagating nearly BICs with extremely large $Q$ factors of order $exp(\lambda N)$ are surr
Externí odkaz:
http://arxiv.org/abs/1804.06626
Autor:
Bulgakov, Evgeny N., Sadreev, Almas F.
Publikováno v:
Phys. Rev. A 97, 033834 (2018)
We consider E polarized bound states in the radiation continuum (BICs) in circular periodical arrays of $N$ infinitely long dielectric rods. We find that each true BIC which occurs in an infinite linear array has its counterpart in the circular array
Externí odkaz:
http://arxiv.org/abs/1711.05965
Autor:
Bulgakov, Evgeny N., Sadreev, Almas F.
Publikováno v:
Phys. Rev. A 96, 013841 (2017)
We report bound states in the radiation continuum (BSCs) in a single infinitely long dielectric rod with periodically stepwise modulated permittivity alternating from $\epsilon_1$ to $\epsilon_2$. For $\epsilon_2=1$ in air the rod is equivalent to a
Externí odkaz:
http://arxiv.org/abs/1706.06719
The article reports on light enhancement by structural resonances in linear periodic arrays of identical dielectric elements. As the basic elements both spheres and rods with circular cross section have been considered. In either case, it has been de
Externí odkaz:
http://arxiv.org/abs/1702.05990