Optical rogue wave structures and phase transitions in a light guide fiber system doped with two-level resonant atoms

Symmetry breaking breathers and their phase transitions in a coupled optical fiber system

Optical and Quantum Electronics ◽

10.1007/s11082-021-02879-y ◽

2021 ◽

Vol 53 (5) ◽

Author(s):

Bang-Qing Li ◽

Wen-Yang Guan

Keyword(s):

Phase Transitions ◽

Symmetry Breaking ◽

Optical Fiber ◽

Fiber System

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Phase transitions of breather of a nonlinear Schrödinger equation in inhomogeneous optical fiber system

Optik ◽

10.1016/j.ijleo.2020.164670 ◽

2020 ◽

Vol 217 ◽

pp. 164670 ◽

Cited By ~ 1

Author(s):

Bang-Qing Li

Keyword(s):

Phase Transitions ◽

Schrödinger Equation ◽

Optical Fiber ◽

Nonlinear Schrödinger Equation ◽

Schrodinger Equation ◽

Nonlinear Schrodinger Equation ◽

Fiber System ◽

Nonlinear Schrödinger

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Breather-to-soliton and rogue wave-to-soliton transitions in a resonant erbium-doped fiber system with higher-order effects

Nonlinear Dynamics ◽

10.1007/s11071-016-2693-5 ◽

2016 ◽

Vol 85 (1) ◽

pp. 389-398 ◽

Cited By ~ 11

Author(s):

Lei Wang ◽

Shen Li ◽

Feng-Hua Qi

Keyword(s):

Rogue Wave ◽

Higher Order ◽

Order Effects ◽

Fiber System ◽

Erbium Doped ◽

Higher Order Effects

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Mixed structures of optical breather and rogue wave for a variable coefficient inhomogeneous fiber system

Optical and Quantum Electronics ◽

10.1007/s11082-019-2060-0 ◽

2019 ◽

Vol 51 (11) ◽

Cited By ~ 8

Author(s):

Wen-Yang Guan ◽

Bang-Qing Li

Keyword(s):

Variable Coefficient ◽

Rogue Wave ◽

Fiber System

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Electron Microscopy of Graphite Intercalation Compounds

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100055564 ◽

1982 ◽

Vol 40 ◽

pp. 544-545

Author(s):

G. Timp ◽

L. Salamanca-Riba ◽

L.W. Hobbs ◽

G. Dresselhaus ◽

M.S. Dresselhaus

Keyword(s):

Electron Microscopy ◽

Phase Transitions ◽

Domain Wall ◽

Intercalation Compounds ◽

Lattice Plane ◽

Wall Model ◽

Graphite Intercalation Compounds ◽

Fundamental Symmetry ◽

Graphite Intercalation

Electron microscopy can be used to study structures and phase transitions occurring in graphite intercalations compounds. The fundamental symmetry in graphite intercalation compounds is the staging periodicity whereby each intercalate layer is separated by n graphite layers, n denoting the stage index. The currently accepted model for intercalation proposed by Herold and Daumas assumes that the sample contains equal amounts of intercalant between any two graphite layers and staged regions are confined to domains. Specifically, in a stage 2 compound, the Herold-Daumas domain wall model predicts a pleated lattice plane structure.

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Yag Single Crystals for Scintillators of Stem

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100179580 ◽

1990 ◽

Vol 48 (1) ◽

pp. 166-167

Author(s):

M. Hibino ◽

K. Irie ◽

R. Autrata ◽

P. schauer

Keyword(s):

Single Crystals ◽

Yttrium Aluminum Garnet ◽

Light Guide ◽

Detection System ◽

Polished Surface ◽

Detective Quantum Efficiency ◽

Backscattered Electrons ◽

Electron Detection ◽

Yttrium Aluminum ◽

Phosphor Screens

Although powdered phosphor screens are usually used for scintillators of STEM, it has been found that the phosphor screen of appropriate thickness should be used depending on the accelerating voltage, in order to keep high detective quantum efficiency. 1 It has been also found that the variation in sensitivity, due to granularity of phosphor screens, makes the measurement of fine electron probe difficult and that the sensitivity reduces with electron irradiation specially at high voltages.In order to find out a preferable scintillator for STEM, single crystals of YAG (yttrium aluminum garnet), which are used for detecting secondary and backscattered electrons in SEM were investigated and compared with powdered phosphor screens, at the accelerating voltages of 100kV and 1 MV. A conventional electron detection system, consisting of scintillator, light guide and PMT (Hamamatsu Photonics R268) was used for measurements. Scintillators used are YAG single crystals of 1.0 to 3.2mm thicknesses (with surfaces matted for good interface to the light guide) and of 0.8mm thickness (with polished surface), and powdered P-46 phosphor screens of 0.07mm and 1.0mm thicknesses for 100kV and 1MV, respectively. Surfaces on electron-incidence side of all scintillators are coated with reflecting layers.

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Multiple phase transitions investigated by high-speed TEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100175880 ◽

1990 ◽

Vol 48 (4) ◽

pp. 550-551

Author(s):

Oleg Bostanjoglo ◽

Peter Thomsen-Schmidt

Keyword(s):

Phase Transitions ◽

High Speed ◽

Short Exposure ◽

Semiconductor Film ◽

Time Resolved ◽

Short Exposure Time ◽

Multiple Phase ◽

Model Substance ◽

History Of ◽

Electron Image

Thin GexTe1-x (x = 0.15-0.8) were studied as a model substance of a composite semiconductor film, in addition being of interest for optical storage material. Two complementary modes of time-resolved TEM were used to trace the phase transitions, induced by an attached Q-switched (50 ns FWHM) and frequency doubled (532 nm) Nd:YAG laser. The laser radiation was focused onto the specimen within the TEM to a 20 μm spot (FWHM). Discrete intermediate states were visualized by short-exposure time doubleframe imaging /1,2/. The full history of a transformation was gained by tracking the electron image intensity with photomultiplier and storage oscilloscopes (space/time resolution 100 nm/3 ns) /3/. In order to avoid radiation damage by the probing electron beam to detector and specimen, the beam is pulsed in this continuous mode of time-resolved TEM,too.Short events ( <2 μs) are followed by illuminating with an extended single electron pulse (fig. 1c)

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