Microstructure and defect characters of lithium niobate with different Li concentrations

2021 ◽  
Author(s):  
Kunfeng Chen ◽  
Yanlu Li ◽  
Chao Peng ◽  
Zheng Lu ◽  
Xingyun Luo ◽  
...  
Keyword(s):  
Optical Properties ◽  
Lithium Niobate ◽  
Dielectric Materials ◽  
Defect Structures ◽  
Huge Impact ◽  
Defect Microstructures

Lithium niobate is a kind of well-known dielectric materials and its defect microstructures have shown huge impact on acousto-optical, piezoelectric, and electro-optical properties. However, understanding the involved defect structures and...

Effects of Ionising Radiation on Optical Properties of Lithium Niobate Single Crystals

2005 ◽  
Vol 318 (1) ◽  
pp. 113-118
Author(s):  
N. V. Sidorov ◽  
M. N. Palatnikov ◽  
V. T. Kalinnikov ◽  
I. V. Biryukova ◽  
K. Bormanis
Keyword(s):  
Optical Properties ◽  
Lithium Niobate ◽  
Single Crystals ◽  
Ionising Radiation

Use of heavy dielectric materials in solidly mounted A1 mode resonators based on lithium niobate

2021 ◽  
Author(s):  
Zhaohui Wu ◽  
Bin Shi ◽  
Yawei Li ◽  
Workie Temesgen Bailie ◽  
Yu-Po Wong ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Acoustic Impedance ◽  
Dielectric Materials ◽  
Coupling Factor ◽  
Parasitic Capacitance ◽  
Eletromechanical Coupling ◽  
Lamb Mode

Abstract This paper discusses applicability of dielectric materials with high acoustic impedance a for the use in A1 Lamb mode solidly mounted resonator (SMR) with large eletromechanical coupling factor k2 . The study first shows that the use of metal as reflector creates parasitic capacitance p, which reduces k2 significantly. Then, A1 Lamb mode SMRs are designed using HfN, HfO2, WN, WO3 etc., and achievable performances are compared. When either HfN, HfO2, WN, or WO3 is employed, relative large k2 up to 25% is achievable. For further k2 enhancement, a hybrid reflector configuration is also examined, wherein HfN is applied only to the top high-a layer and W is applied to the others. The result indicates that p caused by the W layers is still significant, and k2 becomes worse in total.

Growth and Optical Properties of Near-Stoichiometric Ni2+-Doped Lithium Niobate Crystal

2008 ◽  
Vol 28 (1) ◽  
pp. 138-142
Author(s):  
张嗣春 Zhang Sichun ◽  
夏海平 Xia Haiping ◽  
王金浩 Wang Jinhao ◽  
张约品 Zhang Yuepin
Keyword(s):  
Optical Properties ◽  
Lithium Niobate ◽  
Lithium Niobate Crystal

Structural and optical properties of hafnium-doped lithium-niobate crystals

2007 ◽  
Vol 4 (3) ◽  
pp. 1372-1375 ◽  
Author(s):  
P. Galinetto ◽  
F. Rossella ◽  
I. Cristiani ◽  
P. Minzioni ◽  
V. Degiorgio ◽  
...  
Keyword(s):  
Optical Properties ◽  
Lithium Niobate ◽  
Structural And Optical Properties ◽  
Lithium Niobate Crystals
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