scholarly journals A compact and stable incidence-plane-rotating second harmonics detector

2021 ◽  
Vol 92 (4) ◽  
pp. 043905
Author(s):  
S. H. Kim ◽  
S. Jung ◽  
B. Seok ◽  
Y. S. Kim ◽  
H. Park ◽  
...  
Keyword(s):  
Incidence Plane

Synthetic vertical seismic profiles for nonnormal incidence plane waves

Geophysics ◽  
1985 ◽  
Vol 50 (1) ◽  
pp. 127-141 ◽  
Author(s):  
F. Aminzadeh ◽  
J. M. Mendel
Keyword(s):  
Simple Procedure ◽  
Plane Waves ◽  
Space Representation ◽  
Elastic Model ◽  
S Wave ◽  
Seismic Profiles ◽  
Vertical Seismic Profiles ◽  
State Space Representation ◽  
Wave Velocities ◽  
Incidence Plane

Vertical seismic profiles (VSPs) are, by definition, recordings of seismic signals (total upgoing and downgoing seismic wave fields) at different depth points, usually at equally spaced intervals [Formula: see text], i = 1, 2, …, I. In a nonnormal incidence (NNI) elastic model, where each layer is described by thickness, density, and P- and S-wave velocities, the mapping between time and depth needed to generate synthetic VSPs is not usually straightforward. In this paper we develop a relatively simple procedure for generating synthetic vertical and horizontal direction plane wave NNI VSPs. No spatial discretization is necessary. We (1) compute two surface seismograms, one vertical and the other horizontal, exactly as described in Aminzadeh and Mendel (1982); and (2) downward continue the surface seismograms to fixed VSP depth points. This paper demonstrates an algorithm for downward continuation of an elastic wave field using state‐space representation and gives simulations which illustrate both z- and x-direction primaries and complete VSPs for different geologic models and different incident angles.

scholarly journals Silicon-Based All-Dielectric Metasurface on an Iron Garnet Film for Efficient Magneto-Optical Light Modulation in Near IR Range

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2926
Author(s):  
Denis M. Krichevsky ◽  
Shuang Xia ◽  
Mikhail P. Mandrik ◽  
Daria O. Ignatyeva ◽  
Lei Bi ◽  
...  
Keyword(s):  
Light Modulation ◽  
Light Modulators ◽  
Incidence Plane ◽  
Optical Modes ◽  
Magneto Optical Effect ◽  
Device Applications ◽  
Light Matter Interaction ◽  
Iron Garnet ◽  
Silicon Based ◽  
Dielectric Metasurface

All-dielectric nanostructures provide a unique low-loss platform for efficiently increasing light-matter interaction via excitation of the localized or propagating optical modes. Here, we report on the transverse magneto-optical Kerr effect enhancement in an all-dielectric metasurface based on a two-dimensional array of Si nanodisks on a cerium substituted dysprosium iron garnet thin film. We observed up to 15% light intensity modulation under TM modes excitation. The observed magneto-optical effect is nearly independent of the rotation of the light incidence plane with respect to the metasurface. Being compatible with conventional semiconductor technology, our structure holds promise for device applications, such as light modulators, magnetic and chemical sensors.

Advanced Study and Generalization of Rotation-Incidence-Plane Method

2014 ◽  
Vol 34 (7) ◽  
pp. 0712008
Author(s):  
刘永利 Liu Yongli ◽  
张锦龙 Zhang Jinlong ◽  
王占山 Wang Zhanshan
Keyword(s):  
Plane Method ◽  
Advanced Study ◽  
Incidence Plane

Reflection of elastic waves from a linear transition layer

1966 ◽  
Vol 56 (2) ◽  
pp. 511-526
Author(s):  
Ravindra N. Gupta
Keyword(s):  
Plane Wave ◽  
Material Properties ◽  
Transition Layer ◽  
Elastic Waves ◽  
Wave Reflection ◽  
Reflection Coefficients ◽  
Angle Of Incidence ◽  
Arbitrary Angle ◽  
S Wave ◽  
Incidence Plane

abstract A separation of P- and S-wave potentials is achieved for an inhomogeneous medium in which density is constant and Lame's parameters, λ and μ, are assumed to vary as λ/λ1 = μ/μ1 = (1 + bz)2 where λ1, μ1 and b are constants. The resulting equations are solved for an arbitrary angle of incidence. Plane wave reflection coefficients are obtained for the situation when the material mentioned above forms a transition layer between two homogeneous, elastic half-spaces. First and/or second-order discontinuities in material properties are permitted at the boundaries of the transition layer. Some numerical results are given.

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