Enhanced fifth-order nonlinearity with competing linear and nonlinear susceptibility via Fano interference

2021 ◽  
Vol 38 (4) ◽  
pp. 1392
Author(s):  
Chen Li ◽  
Jing Wang ◽  
Lidan Lin ◽  
Qingtian Zeng ◽  
Yangjian Cai ◽  
...  
Keyword(s):  
Nonlinear Susceptibility ◽  
Fano Interference ◽  
Linear And Nonlinear ◽  
Fifth Order

scholarly journals Quasiparticle effects on the linear and nonlinear susceptibility of ZnGeP2

RSC Advances ◽  
2019 ◽  
Vol 9 (61) ◽  
pp. 35771-35779
Author(s):  
Hua Xie ◽  
Shenghao Fang ◽  
He Zhao ◽  
Xiaoliang Xu ◽  
Ning Ye ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Nonlinear Optics ◽  
Nonlinear Optical ◽  
High Thermal Conductivity ◽  
Nonlinear Susceptibility ◽  
Optical Coefficient ◽  
Linear And Nonlinear ◽  
Nonlinear Optical Coefficient

The semiconductor zinc germanium diphosphide (ZnGeP2) has wide applications in the infrared nonlinear optics (NLO) due to its high nonlinear optical coefficient, wide infrared transparency range and high thermal conductivity.

Optimal State Variable Feedback With Bounded Gains

1969 ◽  
Vol 91 (2) ◽  
pp. 251-256
Author(s):  
H. F. Millers ◽  
Y. Takahashi
Keyword(s):  
Nonlinear Programming ◽  
Projection Method ◽  
Performance Criterion ◽  
Gradient Projection ◽  
Order Linear ◽  
Optimal State ◽  
State Variable ◽  
Linear And Nonlinear ◽  
Bounded Feedback ◽  
Fifth Order

The optimization of bounded feedback gains with respect to an arbitrary integral performance criterion is performed using nonlinear programming. The gradient projection method has been applied to several examples of fifth order, linear, and nonlinear, with good results.

scholarly journals Anisotropic optical responses of layered thallium arsenic sulfosalt gillulyite

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ravi P. N. Tripathi ◽  
Jie Gao ◽  
Xiaodong Yang
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
2D Materials ◽  
Chemical Properties ◽  
Optical Signal ◽  
Nonlinear Susceptibility ◽  
Great Promise ◽  
Large Area ◽  
Optical Responses ◽  
Linear And Nonlinear

AbstractMulti-element two-dimensional (2D) materials hold great promise in the context of tailoring the physical and chemical properties of the materials via stoichiometric engineering. However, the rational and controllable synthesis of complex 2D materials remains a challenge. Herein, we demonstrate the preparation of large-area thin quaternary 2D material flakes via mechanical exfoliation from a naturally occurring bulk crystal named gillulyite. Furthermore, the anisotropic linear and nonlinear optical properties including anisotropic Raman scattering, linear dichroism, and anisotropic third-harmonic generation (THG) of the exfoliated gillulyite flakes are investigated. The observed highly anisotropic optical properties originate from the reduced in-plane crystal symmetry. Additionally, the third-order nonlinear susceptibility of gillulyite crystal is retrieved from the measured thickness-dependent THG emission. We anticipate that the demonstrated strong anisotropic linear and nonlinear optical responses of gillulyite crystal will facilitate the better understanding of light-matter interaction in quaternary 2D materials and its implications in technological innovations such as photodetectors, frequency modulators, nonlinear optical signal processors, and solar cell applications.

scholarly journals BAUMAN MSTU SCIENTIFIC SCHOOL “ZOOM LENS DESIGN”: FEATURES OF THEORY AND PRACTICE

2018 ◽  
Vol 42 (1) ◽  
pp. 72-83 ◽  
Author(s):  
O. V. Rozhkov ◽  
D. E. Piskunov ◽  
P. A. Nosov ◽  
V. Yu. Pavlov ◽  
A. M. Khorokhorov ◽  
...  
Keyword(s):  
Theory And Practice ◽  
Zoom Lens ◽  
Scientific School ◽  
Lens Design ◽  
Theoretical Concepts ◽  
The Third ◽  
Linear And Nonlinear ◽  
Generalized Parameters ◽  
Fifth Order ◽  
Zoom Lens Design

Key theoretical concepts advanced by the Bauman MSTU scientific school 'Zoom lens design' are discussed. These include methods for design of both classical and laser zoom lenses, systems with linear and nonlinear relations between the displacements of components, basics of professor I. I. Pakhomov's theory of generalized parameters, a method of paraxial synthesis of multicomponent zoom systems, a method of aberration synthesis of zoom systems in the approximation of the third- and fifth-order aberrations. The effectiveness of the described methods is illustrated by examples of designing zoom systems with superior optical characteristics.

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