scholarly journals Linear and nonlinear optical probe of the ferroelectric-like phase transition in a polar metal, LiOsO3

2018 ◽  
Vol 113 (12) ◽  
pp. 122906 ◽  
Author(s):  
Haricharan Padmanabhan ◽  
Yoonsang Park ◽  
Danilo Puggioni ◽  
Yakun Yuan ◽  
Yanwei Cao ◽  
...  
Keyword(s):  
Phase Transition ◽  
Nonlinear Optical ◽  
Optical Probe ◽  
Linear And Nonlinear

PRELIMINARY OPTICAL STUDY ON ER FLUIDS

1994 ◽  
Vol 08 (20n21) ◽  
pp. 2921-2933 ◽  
Author(s):  
L. W. ZHOU ◽  
J. F. YE ◽  
R. B. TAO ◽  
Y. TANG ◽  
J. F. PENG ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Electric Fields ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Response ◽  
Optical Study ◽  
Solid States ◽  
Linear And Nonlinear ◽  
Er Fluids

Linear and nonlinear optical study on electrorheological (ER) fluids is reported. The ER fluids under the investigation were glass beads, zeolite and ferroelectrics. The linear optical response of some ER fluids showed sharp changes near critical electric fields. An enhancement of electric field induced second harmonic generations (EFISH) was observed as the function of E2, where E is the external electric field. The said enhancement is considered to be corresponding to a modulation of the material's refractive index associated with the electric field induced polarization of the delocalized electrons. The enhanced nonlinear optical response on the transition between liquid and solid states can be related to the phase transition in ER fluids.

Linear and Nonlinear Optical Properties of Small Silicon Clusters

1990 ◽  
Author(s):  
Tapio T. Rantala ◽  
Mark I. Stockman ◽  
Daniel A. Jelski ◽  
Thomas F. George
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Silicon Clusters ◽  
Linear And Nonlinear

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.

Mechanochemical synthesis, linear and nonlinear optical properties of a new oligophenyleneimine with indole terminal moiety for optoelectronic application

2021 ◽  
Author(s):  
Francisco Germán Mejía-Hernández ◽  
Oscar Javier Hernández-Ortíz ◽  
Francisco Misael Muñoz-Pérez ◽  
Armando Irving Martínez-Pérez ◽  
Rosa Angeles Vázquez-García ◽  
...  
Keyword(s):  
Optical Properties ◽  
Mechanochemical Synthesis ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Optoelectronic Application ◽  
Linear And Nonlinear

Competing hydrogen-bonding interactions in a high-Tc organic molecular-ionic crystal with evident nonlinear optical response

CrystEngComm ◽  
2021 ◽  
Vol 23 (13) ◽  
pp. 2509-2512
Author(s):  
Wen-Tao Xu ◽  
Jun-Chao Liu ◽  
Yu-Ling Zeng ◽  
Hua Zhang ◽  
Zhong-Xia Wang
Keyword(s):  
Phase Transition ◽  
Hydrogen Bonding ◽  
Ionic Crystal ◽  
Nonlinear Optical ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
High Tc ◽  
Hydrogen Bonding Interactions ◽  
Nlo Response

An organic molecular-ionic crystal of (TPPO–H)2SO4 exhibits moderate NLO response which is twice that of KDP and competing hydrogen-bonding interactions triggered high-Tc phase transition.

Integrity in linear and nonlinear optical properties of L-tyrosine doped bis thiourea cadmium acetate single crystal

2021 ◽  
Vol 573 (1) ◽  
pp. 52-62
Author(s):  
Siddique Aneesa-Fatema ◽  
Y. B. Rasal ◽  
R. N. Shaikh ◽  
M. D. Shirsat ◽  
S. S. Hussaini ◽  
...  
Keyword(s):  
Optical Properties ◽  
Single Crystal ◽  
Nonlinear Optical ◽  
Cadmium Acetate ◽  
Nonlinear Optical Properties ◽  
Linear And Nonlinear

scholarly journals Explicit environmental and vibronic effects in simulations of linear and nonlinear optical spectroscopy

2021 ◽  
Vol 154 (8) ◽  
pp. 084116
Author(s):  
Sapana V. Shedge ◽  
Tim J. Zuehlsdorff ◽  
Ajay Khanna ◽  
Stacey Conley ◽  
Christine M. Isborn
Keyword(s):  
Optical Spectroscopy ◽  
Nonlinear Optical ◽  
Nonlinear Optical Spectroscopy ◽  
Linear And Nonlinear ◽  
Vibronic Effects
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