OPTICAL SHG EFFECT OF STOICHIOMETRIC Ba4Na2Nb10O30 (BNN), Gd-DOPED BNN, AND Nd-DOPED BNN

1994 ◽  
Vol 08 (13) ◽  
pp. 785-798 ◽  
Author(s):  
MASAYUKI TSUKIOKA ◽  
TETSUROU FUJIMOTO ◽  
SADAO TSUTSUMI

In order to investigate the doping effect of Ba 2 NaNb 5 O 15 by rare-earth ions, single crystals of stoichiometric BNN, Gd-doped BNN, and Nd-doped BNN were synthesized. The measurements were carried out for second harmonic generation (SHG), microscopic observation on {001}, and for dielectric property of these materials. The considerable effects by the doping were found for the SHG. The doping effect was investigated from the point of view of the theory of electro-optical and nonlinear optical effect on oxygen octahedral ferroelectrics, and from that of domain structure. Microscopic observation proved that the refractive index fluctuation causes several SHG phase matching conditions.

RSC Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 4539-4544 ◽  
Author(s):  
Ruonan Yin ◽  
Yang Li ◽  
Kangdi Zhong ◽  
Hang Yao ◽  
Yamin Zhang ◽  
...  

Bi4O5I2 exhibits an extremely high second harmonic generation response and enhanced photocatalytic activity. The multifunction of Bi4O5I2 is mainly resulting from the dipole moment of the stereochemical activity of Bi 6s lone pairs.


2020 ◽  
Vol 7 (19) ◽  
pp. 3674-3686
Author(s):  
Xianghe Meng ◽  
Kaijin Kang ◽  
Fei Liang ◽  
Jian Tang ◽  
Wenlong Yin ◽  
...  

Optimal arrangements of π-conjugated anions in alkaline earth metal hydro-isocyanurates with rich structures result in large birefringence and a giant nonlinear optical effect.


CrystEngComm ◽  
2019 ◽  
Vol 21 (39) ◽  
pp. 5882-5889 ◽  
Author(s):  
Kunal Kumar ◽  
Olaf Stefanczyk ◽  
Koji Nakabayashi ◽  
Kenta Imoto ◽  
Shin-ichi Ohkoshi

Studies of {[Er(dma)5][W(CN)8]}n (1) showing nonlinear optical effect of second harmonic generation, and [Er(dma)5(H2O)2]·[W(CN)8]·dma·H2O (2) and [Er(dma)4(H2O)3]·[W(CN)8]·dma·3H2O (3) revealing field-induced single molecule magnet behavior.


2017 ◽  
Vol 111 (16) ◽  
pp. 161103 ◽  
Author(s):  
Q. Zhang ◽  
X. M. Cheng ◽  
H. W. Chen ◽  
B. He ◽  
Z. Y. Ren ◽  
...  

2013 ◽  
Vol 41 ◽  
pp. 12005 ◽  
Author(s):  
Susanta K. Das ◽  
M. Bock ◽  
R. Grunwald ◽  
B. Borchers ◽  
J. Hyyti ◽  
...  

2021 ◽  
Author(s):  
Fugang Xi ◽  
He Yang ◽  
Vladislav Khayrudinov ◽  
Yuhang He ◽  
Tuomas Haggren ◽  
...  

Abstract The development of powerful terahertz (THz) emitters is the cornerstone for future THz applications, such as communication, medical biology, non-destructive inspection, and scientific research. Here, we report the THz emission properties and mechanisms of mushroom-shaped InAs nanowire (NW) network using linearly polarized laser excitation. By investigating the dependence of THz signal to the incidence pump light properties (e.g., incident angle, direction, fluence, and polarization angle), we conclude that the THz wave emission from the InAs NW network is induced by the combination of linear and nonlinear optical effects. The former is a transient photocurrent accelerated by the photo-Dember field, while the latter is related to the resonant optical rectification effect. Moreover, the p-polarized THz wave emission component is governed by the linear optical effect with a proportion of ~85% and the nonlinear optical effect of ~15%. In comparison, the s-polarized THz wave emission component is mainly decided by the nonlinear optical effect. The THz emission is speculated to be enhanced by the localized surface plasmon resonance absorption of the In droplets on top of the NWs. This work verifies the nonlinear optical mechanism in the THz generation of semiconductor NWs and provides an enlightening reference for the structural design of powerful and flexible THz surface and interface emitters in transmission geometry.


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