Large Nonlinear Optical Responses of Dimers Bearing a Donor and Acceptor: Long, Intradimer Multicenter Bonding

2014 ◽  
Vol 118 (49) ◽  
pp. 28746-28756 ◽  
Author(s):  
Wen-Yong Wang ◽  
Yu-He Kan ◽  
Li Wang ◽  
Shi-Ling Sun ◽  
Yong-Qing Qiu
Keyword(s):  
Nonlinear Optical ◽  
Optical Responses ◽  
Donor And Acceptor ◽  
Multicenter Bonding

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.

Large concentration-dependent nonlinear optical responses of starburst diphenylaminofluorenocarbonyl methano[60]fullerene pentads

2007 ◽  
Vol 17 (18) ◽  
pp. 1826 ◽  
Author(s):  
Hendry I. Elim ◽  
Robinson Anandakathir ◽  
Rachel Jakubiak ◽  
Long Y. Chiang ◽  
Wei Ji ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Large Concentration ◽  
Optical Responses

A series of terpyridine-based zinc(ii) complexes assembled for third-order nonlinear optical responses in the near-infrared region and recognizing lipid membranes

2017 ◽  
Vol 5 (31) ◽  
pp. 6348-6355 ◽  
Author(s):  
Yiwen Tang ◽  
Ming Kong ◽  
Xiaohe Tian ◽  
Jinghang Wang ◽  
Qingyuan Xie ◽  
...  
Keyword(s):  
Lipid Membranes ◽  
Nonlinear Optical ◽  
Near Infrared ◽  
Infrared Region ◽  
Biological Imaging ◽  
Tissue Penetration ◽  
Third Order ◽  
Two Photon ◽  
Optical Responses ◽  
Near Infrared Region

Two-photon (TP) microscopy has advantages for biological imaging in that it allows deeper tissue-penetration and excellent resolution compared with one-photon (OP) microscopy.

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

Designing Alkalides with Considerable Nonlinear Optical Responses and High Stability Based on the Facially Polarized Janus all-cis-1,2,3,4,5,6-Hexafluorocyclohexane

2017 ◽  
Vol 36 (17) ◽  
pp. 3352-3359 ◽  
Author(s):  
Wei-Ming Sun ◽  
Bi-Lian Ni ◽  
Di Wu ◽  
Jian-Ming Lan ◽  
Chun-Yan Li ◽  
...  
Keyword(s):  
High Stability ◽  
Nonlinear Optical ◽  
Optical Responses
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