A new method to analyze and understand molecular linear and nonlinear optical responses via field-induced functions: a straightforward alternative to sum-over-states (SOS) analysis

2019 ◽  
Vol 21 (11) ◽  
pp. 6274-6286 ◽  
Author(s):  
Nicolás Otero ◽  
Panaghiotis Karamanis ◽  
Marcos Mandado
Keyword(s):  
Excited State ◽  
Nonlinear Optical ◽  
New Method ◽  
Optical Responses ◽  
Linear And Nonlinear ◽  
Orbital Analysis

Using coupled-perturbed theory the same excited state/orbital analysis as the sum-over-states method may be performed.

scholarly journals Linear and nonlinear optical responses in the chiral multifold semimetal RhSi

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Zhuoliang Ni ◽  
B. Xu ◽  
M.-Á. Sánchez-Martínez ◽  
Y. Zhang ◽  
K. Manna ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Chemical Potential ◽  
Technological Development ◽  
Optical Responses ◽  
Chiral Magnetic Effect ◽  
Hole Band ◽  
Linear And Nonlinear ◽  
Characteristic Features ◽  
Topological Semimetals ◽  
Terahertz Emission Spectroscopy

AbstractChiral topological semimetals are materials that break both inversion and mirror symmetries. They host interesting phenomena such as the quantized circular photogalvanic effect (CPGE) and the chiral magnetic effect. In this work, we report a comprehensive theoretical and experimental analysis of the linear and nonlinear optical responses of the chiral topological semimetal RhSi, which is known to host multifold fermions. We show that the characteristic features of the optical conductivity, which display two distinct quasi-linear regimes above and below 0.4 eV, can be linked to excitations of different kinds of multifold fermions. The characteristic features of the CPGE, which displays a sign change at 0.4 eV and a large non-quantized response peak of around 160 μA/V2 at 0.7 eV, are explained by assuming that the chemical potential crosses a flat hole band at the Brillouin zone center. Our theory predicts that, in order to observe a quantized CPGE in RhSi, it is necessary to increase the chemical potential as well as the quasiparticle lifetime. More broadly, our methodology, especially the development of the broadband terahertz emission spectroscopy, could be widely applied to study photogalvanic effects in noncentrosymmetric materials and in topological insulators in a contact-less way and accelerate the technological development of efficient infrared detectors based on topological semimetals.

Linear and nonlinear optical responses in bacteriochlorophyll a

2007 ◽  
Vol 95 (2-3) ◽  
pp. 309-316 ◽  
Author(s):  
Mitsuru Sugisaki ◽  
Ritsuko Fujii ◽  
Richard J. Cogdell ◽  
Hideki Hashimoto
Keyword(s):  
Nonlinear Optical ◽  
Bacteriochlorophyll A ◽  
Optical Responses ◽  
Linear And Nonlinear

An Unprecedented Antimony(III) Borate with Strong Linear and Nonlinear Optical Responses

2020 ◽  
Vol 132 (20) ◽  
pp. 7867-7870 ◽  
Author(s):  
Youchao Liu ◽  
Xiaomeng Liu ◽  
Shuai Liu ◽  
Qingran Ding ◽  
Yanqiang Li ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Responses ◽  
Linear And Nonlinear

LINEAR AND NONLINEAR OPTICAL PROPERTIES OF GOLD NANOPARTICLES WITH BROKEN SYMMETRY

2006 ◽  
Vol 15 (01) ◽  
pp. 43-53 ◽  
Author(s):  
BRIAN K. CANFIELD ◽  
SAMI KUJALA ◽  
KAISA LAIHO ◽  
KONSTANTINS JEFIMOVS ◽  
TUOMAS VALLIUS ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Optical Properties ◽  
Electron Beam Lithography ◽  
Nonlinear Optical ◽  
Optical Measurements ◽  
Broken Symmetry ◽  
Nanoparticle Arrays ◽  
Optical Responses ◽  
Optical Generation ◽  
Linear And Nonlinear

We describe our research involving arrays of gold nanoparticles fabricated with electron beam lithography. Small defects in the particles introduced during the fabrication process result in broken design symmetry. The broken symmetry renders the arrays chiral, and signatures of chirality can be observed in both the linear and nonlinear optical responses through precise polarization measurements. The defects enhance the local electric field, enabling more efficient nonlinear optical generation and therefore making nonlinear optical measurements more sensitive to their presence. We also discuss future objectives for clarifying the microscopic processes underlying the optical responses in gold nanoparticle arrays.

An Unprecedented Antimony(III) Borate with Strong Linear and Nonlinear Optical Responses

2020 ◽  
Vol 59 (20) ◽  
pp. 7793-7796 ◽  
Author(s):  
Youchao Liu ◽  
Xiaomeng Liu ◽  
Shuai Liu ◽  
Qingran Ding ◽  
Yanqiang Li ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Optical Responses ◽  
Linear And Nonlinear

Specific features of linear and nonlinear optical responses of chalcogenide glasses in the As-S-Se and As-Se-Te systems

2014 ◽  
Vol 117 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Yu. S. Kuzyutkina ◽  
E. A. Romanova ◽  
V. I. Kochubei ◽  
V. S. Shiryaev
Keyword(s):  
Chalcogenide Glasses ◽  
Nonlinear Optical ◽  
Optical Responses ◽  
Linear And Nonlinear

Excited-state enhancement of third-order nonlinear optical responses in conjugated organic chains

1995 ◽  
Vol 51 (4) ◽  
pp. 3234-3245 ◽  
Author(s):  
D. C. Rodenberger ◽  
J. R. Heflin ◽  
A. F. Garito
Keyword(s):  
Excited State ◽  
Nonlinear Optical ◽  
Third Order ◽  
Optical Responses

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 Linear and nonlinear optical responses in Kitaev spin liquids

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Minoru Kanega ◽  
Tatsuhiko N. Ikeda ◽  
Masahiro Sato
Keyword(s):  
Nonlinear Optical ◽  
Spin Liquids ◽  
Optical Responses ◽  
Linear And Nonlinear
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