Results 21 to 30 of about 9,825 (275)

Programmable VO2 metasurface for terahertz wave beam steering

iScience, 2022
Summary: Programmable vanadium dioxide (VO2) metasurface is proposed at THz frequencies. The insulating and metallic states of VO2 can be switched via external electrical stimulation, resulting in the dynamical modulation of electromagnetic response. The
Daquan Yang, Weiguang Wang, Erpeng Lv, Haiming Wang, Bingchao Liu, Yanzhao Hou, Jin-hui Chen   +6 more
doaj   +1 more source

Chip-to-chip optical wireless link feasibility using optical phased arrays on silicon-on-insulator [PDF]

, 2010
One- and two-dimensional integrated optical phased arrays (OPAs) on silicon-on-insulator have been fabricated and measured having directivities of more than 40dBi and steering ranges up to 10 degrees .
Baets, Roel, Rogier, Hendrik, Van Acoleyen, Karel   +2 more
core   +1 more source

(INVITED) Methods for determining the refractive indices and thermo-optic coefficients of chalcogenide glasses at MIR wavelengths

Optical Materials: X, 2019
Chalcogenide glasses have attracted much attention for the realization of photonic components owing to their outstanding optical properties in the mid-infrared (MIR) region. However, relatively few refractive index dispersion data are presently available
Y. Fang, D. Furniss, D. Jayasuriya, H. Parnell, Z.Q. Tang, D. Gibson, S. Bayya, J. Sanghera, A.B. Seddon, T.M. Benson   +9 more
doaj   +1 more source

Experimental Investigation of Actively Q-Switched Er³⁺:ZBLAN Fiber Laser Operating at around 2.8 µm

Sensors, 2020
A diode-pumped Q-switched Er3+:ZBLAN double-clad, single-transverse mode fiber laser is practically realized. The Q-switched laser characteristics as a function of pump power, repetition rate, and fiber length are experimentally investigated. The results
Lukasz Sojka, Lukasz Pajewski, Samir Lamrini, Mark Farries, Trevor M. Benson, Angela B. Seddon, Slawomir Sujecki   +6 more
doaj   +1 more source

Operando monitoring transition dynamics of responsive polymer using optofluidic microcavities

Light: Science & Applications, 2021
Operando monitoring transition dynamics of responsive polymer via a self-referencing optofluidic microcavity is demonstrated. The refractive index and temperature information of the analyte during the phase-transition process are precisely decoupled.
Da-Quan Yang, Jin-hui Chen, Qi-Tao Cao, Bing Duan, Hao-Jing Chen, Xiao-Chong Yu, Yun-Feng Xiao   +6 more
doaj   +1 more source

Benchmarking five numerical simulation techniques for computing resonance wavelengths and quality factors in photonic crystal membrane line defect cavities [PDF]

, 2018
We present numerical studies of two photonic crystal membrane microcavities, a short line-defect cavity with relatively low quality ($Q$) factor and a longer cavity with high $Q$.
Breinbjerg, Olav, Burger, Sven, de Lasson, Jakob Rosenkrantz, Frandsen, Lars Hagedorn, Gregersen, Niels, Gutsche, Philipp, Häyrynen, Teppo, Ivinskaya, Aliaksandra, Kim, Oleksiy S., Lavrinenko, Andrei V., Mørk, Jesper, Sigmund, Ole, Wang, Fengwen   +12 more
core   +2 more sources

Gold Nanorods as Saturable Absorber for Harmonic Soliton Molecules Generation

Frontiers in Chemistry, 2019
Gold nanorods (GNRs) has been investigated in the field of chemistry, optoelectronics, and medicine for their tenability, compatibility, electromagnetics, and excellent photonics properties.
Yiqing Shu, Penglai Guo, Xiaohui Li, Guian Li, Peng Wang, Ge Shen, Jianqing Li   +6 more
doaj   +1 more source

New electromagnetic memories and soft photon theorems [PDF]

Physical Review D, 2017
In this paper, we present a new type of electromagnetic memory. It is a `magnetic' type, or B mode, radiation memory effect. Rather than a residual velocity, we find a position displacement of a charged particle induced by the B mode radiation with memory. We find two types of electromagnetic displacement (ordinary and null). We also show that the null
Mao, Pujian, Ouyang, Hao, Wu, Jun-Bao, Wu, Xiaoning   +3 more
openaire   +2 more sources

Steerable and Modular Stripline Series-Fed Patch Antenna (SSFPA) for GEO Satellite Links

IEEE Access
This work presents the design and fabrication of a modular stripline series-fed patch antenna (SSFPA) for Ku-band GEO communication in mobility applications.
Aqeela Saghir, Rossella Gaffoglio, Giuseppe Musacchio Adorisio, Giuseppe Franco, Giorgio Giordanengo   +4 more
doaj   +1 more source

Focusing Light with Curved Guided-Mode Resonance Reflectors

Micromachines, 2011
Employing numerical simulations, we investigate the possibility of using curved guided-mode resonance (GMR) elements to focus light in reflection. We treat GMR reflectors with a parabolic shape and show that they are capable of focusing light effectively
Robert Magnusson, Huiqing Zhai, Mingyu Lu   +2 more
doaj   +1 more source