Results 111 to 120 of about 96,155 (291)
Unraveling the ultra-broadband beam splitter based on parallel coupled waveguides
JPhys PhotonicsAn ultra-broadband beam splitter is theoretically realized using a directional parallel-cascaded coupled-waveguide structure, which is designed and investigated with the effective medium method and finite-difference time-domain method. The 1 dB bandwidth
Sheng Hsiung Chang
doaj +1 more source
Etched beam splitters in InP/InGaAsP
Optics Express, 2011 An etched beam splitter (EBS) photonic coupler based on frustrated total internal reflection (FTIR) is designed, fabricated and characterized in the InP/InGaAsP material system. The EBS offers an ultra compact footprint (8x11 μm) and a complete range of bar/cross coupling ratio designs.
Erik J, Norberg +5 more
openaire +2 more sources
In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy
Advanced Engineering Materials, EarlyView.A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal +4 more
wiley +1 more source
Single – Photon Interference with Thermally Excited Three – Level Cascade Atoms
مجلة علوم ذي قار, 2019 A theoretical model is presented for a single – photon interference experiment in a beam - splitter using the second photon in a cascade transition of a three – level atomic system.
A. Al- Hilfy
doaj
Quantum Nature of Light Measured With a Single Detector
, 2011 We realized the most fundamental quantum optical experiment to prove the non-classical character of light: Only a single quantum emitter and a single superconducting nanowire detector were used.
David Höckel +8 more
core +2 more sources
Advanced Functional Materials, EarlyView.This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous
Mingfeng Xu +5 more
wiley +1 more source
Applied Sciences, 2019 The ground state cooling of a mechanical oscillator and strong optomechanical coupling are necessary prerequisites for realizing quantum control of the macroscopic mechanical oscillator.
Sumei Huang, Aixi Chen
doaj +1 more source
Wave Mechanics of a Two Wire Atomic Beamsplitter
, 2003 We consider the problem of an atomic beam propagating quantum mechanically through an atom beam splitter. Casting the problem in an adiabatic representation (in the spirit of the Born-Oppenheimer approximation in molecular physics) sheds light on ...
C. de Boor +6 more
core +1 more source
A dissipative quantum mechanical beam-splitter
Optics Express, 1998 A dissipative beam-splitter (BS) has been analyzed by modeling the losses in the BS due to the excitation of optical phonons. The losses are obtained in terms of the BS medium properties. The model simplies the picture by treating the loss mechanism as a perturbation on the photon modes in a linear, non-lossy medium in the limit of small losses ...
S A, Ramakrishna +2 more
openaire +2 more sources
Advanced Functional Materials, EarlyView.The study presents biodegradable and recyclable mixed‐matrix membranes (MMMs), hydrogels, and cryogels using luminescent nanoscale metal‐organic frameworks (nMOFs) and biopolymers. These bio‐nMOF‐MMMs combine europium‐based nMOFs as probes for the status of the materials with the biopolymers agar and gelatine and present alternatives to conventional ...
Moritz Maxeiner +4 more
wiley +1 more source