Nonlinear response properties of atomic hydrogen under quantum plasma environment: A time‐dependent variation perturbation study on hyperpolarizability and two‐photon excitations

2020 ◽  
Vol 120 (24) ◽  
Author(s):  
Sukhamoy Bhattacharyya ◽  
Prasanta K. Mukherjee ◽  
Burkhard Fricke
Keyword(s):  
Atomic Hydrogen ◽  
Nonlinear Response ◽  
Time Dependent ◽  
Quantum Plasma ◽  
Response Properties ◽  
Two Photon ◽  
Plasma Environment ◽  
Photon Excitations

Diagrammatic analysis of nonlinear response properties in time-dependent Hartree–Fock theory

1992 ◽  
Vol 70 (2) ◽  
pp. 677-685 ◽  
Author(s):  
Hideo Sekino
Keyword(s):  
Lower Order ◽  
Nonlinear Response ◽  
Time Dependent ◽  
Response Property ◽  
Coupling Term ◽  
Response Properties ◽  
First Order ◽  
Hartree Fock ◽  
Quadratic Response ◽  
Diagrammatic Analysis

Nonlinear response properties in Time-Dependent Hartree–Fock (TDHF) theory are analyzed by diagrammatic techniques and compared with the expression in propagator theory. The term that ensures that the quadratic response function is correct through first order in electron correlation emerges in the coupling term between lower order TDHF amplitudes and causes a violation of particle–hole pair conservation. It is shown diagrammatically that the dynamic hyperpolarizabilities can be expressed by lower order solutions in accordance with the 2n + 1 rule. Keywords: nonlinear response property, TDHF, diagrammatic

scholarly journals The Munker–White Effect and Chromatic Induction Share Similar Nonlinear Response Properties

2010 ◽  
Vol 23 (3) ◽  
pp. 223-240
Author(s):  
Chien-Chung Chen ◽  
Sarina Hui-Lin Chien ◽  
Yong-Jun Lin
Keyword(s):  
Visual Field ◽  
Power Function ◽  
Nonlinear Response ◽  
Spatial Configuration ◽  
Lateral Interaction ◽  
Test Patch ◽  
Response Properties ◽  
Modulation Model ◽  
Bull's Eye ◽  
Color Induction

AbstractThe brightness or color appearance of a region may be altered by the presence of a pattern surrounding it in the visual field. The Munker–White effect (grating surround) and brightness or color induction from concentric annuli ('bull's-eye' surround) are two examples. We examined whether these two phenomena share similar properties. In the asymmetric matching experiment, the task of an observer was to adjust the appearance of a matching patch to match the appearance of a test patch embedded in one of the two types (square wave grating or concentric annuli) of inducing surrounds (inducers). The inducer modulated in one of three color directions (isochromatic: ±(L + M + S) and isoluminance: ±(L – M) or ±S). Each inducer type and color direction had two opposing phases and four contrast levels. The results show that the induced appearance shift increases as a power function of the inducer contrast, regardless of the spatial configuration of the inducer. Further analysis showed that a sensitivity modulation model of lateral interaction could explain both induction effects.

A comparison of tissue penetrations between single and two-photon-excitations

2009 ◽  
Vol 95 (14) ◽  
pp. 143705 ◽  
Author(s):  
Xiao-Qian Wang ◽  
Ji-Yao Chen ◽  
Lan Mi ◽  
Pei-Nan Wang
Keyword(s):  
Two Photon ◽  
Photon Excitations
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