Results 61 to 70 of about 2,286,747 (296)

Waveguide group velocity determination by spectral interference measurements in near-field optical scanning microscopy [PDF]

, 2006
Measurement of spectral interference with a near-field scanning optical microscope is used to determine directly the variation of group velocity between modes of a planar slab waveguide as the modes propagate along the ...
J.J. Baumberg, T. Chaipiboonwong, Chaipiboonwong, T., W.S. Brocklesby, Netti, M.C., J. D. Mills, Brocklesby, W.S., M.E. Zoorob, Mills, J.D., M.C. Netti, Zoorob, M.E., Baumberg, Jeremy, M.D.B Charlton, Charlton, Martin   +13 more
core   +2 more sources

Epitaxially Integrated Electro‐Optic KNbO3 Thin Films on Silicon

Advanced Materials, EarlyView.
We demonstrate the first epitaxial integration of electro‐optic KNbO3 thin films on silicon using suboxide molecular‐beam epitaxy. Combining adsorption‐controlled molecular‐beam epitaxy, advanced characterization, and phase‐field modeling, we demonstrate phase‐pure crystalline films mirroring bulk crystals with robust Pockels response, enabling future ...
Sankalpa Hazra, Tobias Schwaigert, Yingxin Zhu, Aiden Ross, Muhammad Aminul Haque Chowdhury, Shun‐Li Shang, Sameer Singh, Zhiyu Zhang, Zhe Wang, Brynn Brower, Saugata Sarker, Suchismita Sarker, Zi‐Kui Liu, Rama K. Vasudevan, Long‐Qing Chen, Yang Yang, Darrell G. Schlom, Venkatraman Gopalan   +17 more
wiley   +1 more source

A 1064 nm Deep-Etched Wide-Ridge Waveguide Slab-Coupled Photonic Crystal Semiconductor Laser

Photonics
Semiconductor lasers are key devices in optical communication, optical storage and other fields. Achieving single-mode, high-power and high-beam-quality output is an important research goal in laser technology. Conventional slab-coupled optical waveguide
Jianxin Zhang, Gaoben Shi, Xiaoyun Liu, Haizhu Sun, Xinmin Fan, Pingping Wang, Yan Wang, Fuyong Qin, Zaifa Du   +8 more
doaj   +1 more source

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

Monolithic Integration of InP Wire and $\mbox{SiO}_x$ Waveguides on Si Platform

IEEE Photonics Journal, 2015
We report a low-loss InP wire waveguide monolithically integrated with an SiOx waveguide on an Si platform. By means of directly bonding InP to SiO 2, we realized a submicrometer-scale InP wire waveguide with high optical confinement.
H. Nishi, K. Takeda, T. Tsuchizawa, T. Fujii, S. Matsuo, K. Yamada, T. Yamamoto   +6 more
doaj   +1 more source

Recent Advances in Plasma‐Enhanced Atomic Layer Etching for Next‐Generation Nanofabrication

Advanced Materials Interfaces, EarlyView.
Continued semiconductor miniaturization demands atomic‐scale patterning and ultralow surface roughness beyond the capabilities of conventional reactive ion etching. This review highlights advances in isotropic and anisotropic plasma‐enhanced atomic layer etching since 2020, covering fundamental mechanisms, applications across major semiconductor ...
Shih‐Nan Hsiao
wiley   +1 more source

Modelling of the effects of thermal gradients on optical propagation in polymer multimode tapered waveguides in optical backplanes [PDF]

, 2004
Finite difference beam propagation modelling (FD-BPM) calculates the effect of thermal gradients in an optical backplane on the optical field propagation in a polymer multimode linearly tapered waveguide.
Rashed, A.M., Selviah, D.R.
core  

Photonic crystal waveband de-multiplexers

Results in Physics, 2018
In this paper, we theoretically present a silicon photonic-crystal waveguide for waveband de-multiplexing. The waveguide is composed of three different microcavities, and three output ends.
Sampa Nkonde, Chun Jiang
doaj   +1 more source

Technology and performances of silicon oxynitride waveguides for optomechanical sensors fabricated by plasma-enhanced chemical vapour deposition [PDF]

Journal of the European Optical Society-Rapid Publications, 2007
The technology and performance of micromachined channel waveguides, based on plasma-enhanced chemical vapour deposition (PECVD) of silicon oxynitride thin films, are presented.
Sabac A., Gorecki C., Jozwik M., Nieradko L., Meunier C., Gut K.   +5 more
doaj   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source