scholarly journals Формирование и исследование оптических свойств локально растянутых Ge микроструктур, встроенных в резонаторы

2021 ◽  
Vol 55 (5) ◽  
pp. 420
Author(s):  
Д.В. Юрасов ◽  
Н.А. Байдакова ◽  
В.А. Вербус ◽  
Н.С. Гусев ◽  
Е.Е. Морозова ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Optical Properties ◽  
Active Region ◽  
Cavity Formation ◽  
Maximum Strain ◽  
Pl Intensity ◽  
Soi Substrates

In this work, formation of locally tensile strained Ge structures (micro-bridges) on SOI substrates embedded into microcavities is reported and their optical properties are discussed. The cavity compatible with the shape of the active region was designed in such a way as to provide an effective localization of the electromagnetic field in the active region of the structure, as well as to minimize the strain redistribution due to the cavity formation. Micro-photoluminescence (PL) studies have shown a remarkable enhancement of the PL intensity for the locally strained areas as compared to the initial Ge film. It was shown that the formation of a microcavity leads to a decrease in the maximum strain in the active region of the structure, but provides an overall increase in the PL intensity.

Influence of In0.2Ga0.8As strain-reducing layer on the active region of quantum dot superluminescent diodes

2002 ◽  
Vol 737 ◽  
Author(s):  
Z. Y. Zhang ◽  
Ch. M. Li ◽  
P. Jin ◽  
X. Q. Meng ◽  
B. Xu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Active Region ◽  
Quantum Dot ◽  
Room Temperature ◽  
Spectral Width ◽  
Promising Candidate ◽  
Multiple Layer ◽  
Superluminescent Diodes ◽  
Pl Intensity ◽  
Inas Quantum Dot

ABSTRACTWe have investigated the optical properties of asymmetric multiple layer stacked self-assembled InAs quantum dot with different interlayer. We found that asymmetric multiple stacked QD samples with In0.2Ga0.8As + GaAs interlayer can afford a 180nm flat spectral width with strong PL intensity compared to other samples at room temperature. We think this result is due to the introduction of In0.2Ga0.8As strain-reducing layer. Additionally, for the broad spectral width and the strong PL intensity, this structure can be a promising candidate for quantum-dot superluminescent diodes.

Optical properties of water under the action of the electromagnetic field in the infrared spectrum

2020 ◽  
Vol 30 ◽  
pp. 1046-1051
Author(s):  
R. Mghaiouini ◽  
N. Benzbiria ◽  
M.E. Belghiti ◽  
H.E. Belghiti ◽  
M. Monkade ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Optical Properties ◽  
Infrared Spectrum

scholarly journals Transient electromagnetic radiation of the lithosphere in a seismically active region

2019 ◽  
Vol 127 ◽  
pp. 03006
Author(s):  
Yiyang Luo ◽  
Nguyen Xuan An ◽  
Vladislav Lutsenko ◽  
Vladimir Uvarov
Keyword(s):  
Electromagnetic Field ◽  
Active Region ◽  
Electromagnetic Radiation ◽  
Seismic Waves ◽  
Earth’S Crust ◽  
Schumann Resonance ◽  
Short Term ◽  
Transient Electromagnetic ◽  
Earth's Crust ◽  
High Level

To study the electromagnetic radiation of the lithosphere associated with seismic waves, we used the recordings of the natural electromagnetic radiation obtained under conditions of weak industrial noise and a high level of microseismicity in the ELF-VLF wave bands. It is shown that these data contain information about the surface waves of the Earth’s crust and are accompanied by a frequency close to the first harmonic of the Schumann resonance. The distribution of spikes over thresholds is obtained, which can be indicators of the activity in the processes of the Earth’s crust. The averaged form of the spikes for different components of the electromagnetic field is obtained. Attention is drawn to the differences in the various components of the electromagnetic field and their diurnal differences are analyzed. The possibility of using the approach to predict the short-term movement of the Earth’s crust is considered.

Optical Properties and Local Electromagnetic Field Enhancement of Periodic Rectangular Nanohole Arrays in Au-Interlayer-Au Multilayer Films

Plasmonics ◽  
2016 ◽  
Vol 12 (6) ◽  
pp. 1929-1937 ◽  
Author(s):  
Zao Yi ◽  
Miao Liu ◽  
Jiangshan Luo ◽  
Xibin Xu ◽  
Weibin Zhang ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Optical Properties ◽  
Field Enhancement ◽  
Multilayer Films ◽  
Nanohole Arrays

scholarly journals Diffraction of Light by a Two-Dimensional Lattice of Spheres

2012 ◽  
Vol 2012 ◽  
pp. 1-10
Author(s):  
Bernard de Dormale ◽  
Vo-Van Truong
Keyword(s):  
Electromagnetic Field ◽  
Optical Properties ◽  
Multipole Expansion ◽  
Two Dimensional ◽  
Dimensional Lattice ◽  
Theoretical Approaches ◽  
Diffraction Of Light ◽  
Potential Applications ◽  
Computational Procedures ◽  
A New Technique

Two-dimensional arrays of particles are of great interest because of their very characteristic optical properties and numerous potential applications. Although a variety of theoretical approaches are available for the description of their properties, methods that are accurate and convenient for computational procedures are always sought. In this work, a new technique to study the diffraction of a monochromatic electromagnetic field by a two-dimensional lattice of spheres is presented. The method, based on Fourier series, can take into account an arbitrary number of terms in the multipole expansion of the field scattered by each sphere. This method has the advantage of leading to simple formulas that can be readily programmed and used as a powerful tool for nanostructure characterization.

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