Zobrazeno 1 - 10
of 1 250
pro vyhledávání: '"perfect absorption"'
Autor:
Yue-Dong Li, Yue-Gang Chen
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract Perfect absorption with adjustable Q factor and wavelength is essential in both theory and application. To address this issue, a structure composed of an epsilon-near-zero (ENZ)- SiO2 grating and a multilayer dielectric structure was designe
Externí odkaz:
https://doaj.org/article/4ff1cb2576b841b499678caddacdd490
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)
Abstract Infrared perfect absorption has been widely investigated due to its potential applications in photodetectors, photovoltaics and medical diagnostics. In this report, we demonstrate that at particular infrared frequencies, a simple planar stru
Externí odkaz:
https://doaj.org/article/ad06bf7ccd4c4a23aad809ef0c5ebff9
Publikováno v:
Nanophotonics, Vol 13, Iss 3, Pp 377-385 (2024)
Coherent perfect absorption (CPA) has been studied in various fields, such as metasurface, photonics, and acoustics, because of its ability to perfectly absorb light at a specific wavelength. However, the narrow bandwidth of CPA makes its application
Externí odkaz:
https://doaj.org/article/e41943a37f8640be98372a5e4fa9cb69
Publikováno v:
Nanophotonics, Vol 12, Iss 22, Pp 4195-4204 (2023)
Coherent perfect absorption (CPA), as time-reversed lasing, arises from appropriate wave interference within absorbers, offering flexible control over wave absorption. Typically, this control involves tuning the phase difference between two counter-p
Externí odkaz:
https://doaj.org/article/f8baf9a870dd404a84d6af5227929466
Publikováno v:
Photonics, Vol 11, Iss 6, p 544 (2024)
In this work, we introduce a novel coherent perfect absorber, accentuating its novelty by emphasizing the broad bandwidth, reduced thickness, tunable property, and straightforward design achieved through the use of an asymmetric graphene metasurface.
Externí odkaz:
https://doaj.org/article/c7ace7f6d9dc45ff9feecd68245d7ee1
Autor:
Lee Jeng Yi, Chen Pai-Yen
Publikováno v:
Nanophotonics, Vol 12, Iss 15, Pp 3099-3108 (2023)
With consideration of parity-time (PT) symmetry, Lorentz reciprocity theorem, and real Bloch phase, we propose a generalized parametric space for any PT-symmetric unit cells that can comprehensively illustrate the PT phase transition, Bloch phase, an
Externí odkaz:
https://doaj.org/article/b54eb29fe5a4416b997f0359c3c6b811
Autor:
Lian-Xiao Wang, Yue-Gang Chen
Publikováno v:
Results in Physics, Vol 54, Iss , Pp 107081- (2023)
Solar energy is a clean and renewable energy source with excellent exploitation potential. A three-layer structure is designed to couple light from free space and then absorb it. Simulation results show high average absorption of 98.7 % in the 400 to
Externí odkaz:
https://doaj.org/article/22825f7c634943a2b2d2e4bc4f372556
Publikováno v:
Nanophotonics, Vol 12, Iss 3, Pp 505-519 (2023)
Common methods to achieve photon number resolution rely on fast on-off single-photon detectors in conjunction with temporal or spatial mode multiplexing. Yet, these methods suffer from an inherent trade-off between the efficiency of photon number dis
Externí odkaz:
https://doaj.org/article/1fde5eb2eeba4fc38f4dd608d7f75d73
Autor:
Xiao Liu, Jin-Hui Wu
Publikováno v:
New Journal of Physics, Vol 26, Iss 1, p 013048 (2024)
We propose a scheme for realizing exact parity-time ( $\mathcal{PT}$ ) antisymmetry of complex susceptibility in a wide range of probe detuning by considering a one-dimensional lattice of cold atoms driven into the simplest three-level Λ configurati
Externí odkaz:
https://doaj.org/article/5a46b99229fa4c169edc23402065c5cd
Publikováno v:
Results in Physics, Vol 48, Iss , Pp 106420- (2023)
In this research work, in order to solve the unadjustability of traditional noble metal absorbers to meet the complex application requirements in the actual electromagnetic environment, we designed a simple tunable absorber based on graphene with tun
Externí odkaz:
https://doaj.org/article/a9f87dc601b04cd8ad0c11f70e9e808b