Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Alaee Rasoul"'
Autor:
Rahimzadegan Aso, Arslan Dennis, Dams David, Groner Achim, Garcia-Santiago Xavi, Alaee Rasoul, Fernandez-Corbaton Ivan, Pertsch Thomas, Staude Isabelle, Rockstuhl Carsten
Publikováno v:
Nanophotonics, Vol 9, Iss 1, Pp 75-82 (2019)
Metasurfaces made from densely packed resonant wavelength-scale particles enable abrupt modulation of impinging electromagnetic radiation within an ultrathin surface. Combining duality symmetry of particles and rotational symmetry of their arrangemen
Externí odkaz:
https://doaj.org/article/5316fd2eafe04b9f9ebddbd6093aade5
Autor:
Aghili, Sina, Alaee, Rasoul, Ahmadnejad, Amirreza, Mobini, Ehsan, Mohamadpour, Mohamadreza, Rockstuhl, Carsten, Boyd, Robert W., Dolgaleva, Ksenia
Publikováno v:
2515-7647/ 15 May 2024
We exploit InSb's magnetic-induced optical properties to propose THz sub-wavelength antenna designs that actively tune the radiative decay rates of dipole emitters at their proximity. The proposed designs include a spherical InSb antenna and a cylind
Externí odkaz:
http://arxiv.org/abs/2311.07083
Optimizing shapes and topology of physical devices is crucial for both scientific and technological advancements, given its wide-ranging implications across numerous industries and research areas. Innovations in shape and topology optimization have b
Externí odkaz:
http://arxiv.org/abs/2309.16731
Autor:
Lim, Theng-Loo, Vaddi, Yaswant, Bin-Alam, M. Saad, Cheng, Lin, Alaee, Rasoul, Upham, Jeremy, Huttunen, Mikko J., Dolgaleva, Ksenia, Reshef, Orad, Boyd, Robert W.
Resonances in optical systems are useful for many applications, such as frequency comb generation, optical filtering, and biosensing. However, many of these applications are difficult to implement in optical metasurfaces because traditional approache
Externí odkaz:
http://arxiv.org/abs/2112.11625
Autor:
Rahimzadegan, Aso, Karamanos, Theodosios D., Alaee, Rasoul, Lamprianidis, Aristeidis G., Beutel, Dominik, Boyd, Robert W., Rockstuhl, Carsten
Optical metasurfaces consist of a 2D arrangement of scatterers, and they control the amplitude, phase, and polarization of an incidence field on demand. Optical metasurfaces are the cornerstone for a future generation of flat optical devices in a wid
Externí odkaz:
http://arxiv.org/abs/2108.12364
Bianisotropy is a powerful concept enabling asymmetric optical response, including asymmetric reflection, absorption, optical forces, light trapping, and lasing. The physical origin of these asymmetric effects can be understood from magnetoelectric c
Externí odkaz:
http://arxiv.org/abs/2107.02649
Publikováno v:
Phys. Rev. Research 3, 023217 (2021)
A dense cloud of atoms with randomly changing positions exhibits coherent and incoherent scattering. We show that an atomic cloud of subwavelength dimensions can be modeled as a single scatterer where both coherent and incoherent components of the sc
Externí odkaz:
http://arxiv.org/abs/2102.11366
Autor:
Nechayev, Sergey, Eismann, Jörg S., Alaee, Rasoul, Karimi, Ebrahim, Boyd, Robert W., Banzer, Peter
Publikováno v:
Phys. Rev. A 103, 031501 (2021)
Geometrical chirality is a property of objects that describes three-dimensional mirror-symmetry violation and therefore it requires a non-vanishing spatial extent. In contrary, optical chirality describes only the local handedness of electromagnetic
Externí odkaz:
http://arxiv.org/abs/2012.09121
We propose tunable nonlinear antennas based on an epsilon-near-zero material with a large optical nonlinearity. We show that the absorption and scattering cross sections of the antennas can be controlled dynamically from a nearly superscatterer to a
Externí odkaz:
http://arxiv.org/abs/2010.01688
Publikováno v:
Phys. Rev. Research 2, 043409 (2020)
We study scattering phenomena such as the Kerker effect, superscattering, and scattering dark states in a subwavelength atomic antenna consisting of atoms with only electric dipole transitions. We show that an atomic antenna can exhibit arbitrarily l
Externí odkaz:
http://arxiv.org/abs/2008.03574