Photorefractive effect in iron-doped lithium niobate crystals induced by femtosecond pulses of 1.5μm wavelength

2006 ◽  
Vol 88 (5) ◽  
pp. 051120 ◽  
Author(s):  
O. Beyer ◽  
I. Breunig ◽  
F. Kalkum ◽  
K. Buse
Keyword(s):  
Lithium Niobate ◽  
Photorefractive Effect ◽  
Femtosecond Pulses ◽  
Iron Doped ◽  
Lithium Niobate Crystals

scholarly journals Boron Influence on Defect Structure and Properties of Lithium Niobate Crystals

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 458
Author(s):  
Nikolay V. Sidorov ◽  
Natalia A. Teplyakova ◽  
Olga V. Makarova ◽  
Mikhail N. Palatnikov ◽  
Roman A. Titov ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Defect Structure ◽  
Photorefractive Effect ◽  
Ferroelectric Properties ◽  
High Concentration ◽  
Oh Groups ◽  
Boron Doped ◽  
Compositional Uniformity ◽  
Boron Dopant ◽  
Lithium Niobate Crystals

Defect structure of nominally pure lithium niobate crystals grown from a boron doped charge have been studied by Raman and optical spectroscopy, laser conoscopy, and photoinduced light scattering. An influence of boron dopant on optical uniformity, photoelectrical fields values, and band gap have been also studied by these methods in LiNbO3 crystals. Despite a high concentration of boron in the charge (up to 2 mol%), content in the crystal does not exceed 10−4 wt%. We have calculated that boron incorporates only into tetrahedral voids of crystal structure as a part of groups [BO3]3−, which changes O–O bonds lengths in O6 octahedra. At this oxygen–metal clusters MeO6 (Me: Li, Nb) change their polarizability. The clusters determine optically nonlinear and ferroelectric properties of a crystal. Chemical interactions in the system Li2O–Nb2O5–B2O3 have been considered. Boron, being an active element, structures lithium niobate melt, which significantly influences defect structure and physical properties of a crystal grown from such a melt. At the same time, amount of defects NbLi and concentration of OH groups in LiNbO3:B is close to that in stoichiometric crystals; photorefractive effect, optical, and compositional uniformity on the contrary is higher.

Impedance spectroscopy of iron-doped lithium niobate crystals

2008 ◽  
Vol 91 (2) ◽  
pp. 279-281 ◽  
Author(s):  
K. Brands ◽  
M. Falk ◽  
D. Haertle ◽  
T. Woike ◽  
K. Buse
Keyword(s):  
Impedance Spectroscopy ◽  
Lithium Niobate ◽  
Iron Doped ◽  
Lithium Niobate Crystals

The two photorefractive centres in iron doped nearly stoichiometric lithium niobate crystals

2008 ◽  
Vol 17 (3) ◽  
pp. 1014-1019 ◽  
Author(s):  
Li Xiao-Chun ◽  
Kong Yong-Fa ◽  
Wang Li-Zhong ◽  
Liu Hong-De
Keyword(s):  
Lithium Niobate ◽  
Iron Doped ◽  
Lithium Niobate Crystals

Photorefractive effect at 775 nm in doped lithium niobate crystals

2013 ◽  
Vol 103 (3) ◽  
pp. 031904 ◽  
Author(s):  
G. Nava ◽  
P. Minzioni ◽  
I. Cristiani ◽  
N. Argiolas ◽  
M. Bazzan ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Photorefractive Effect ◽  
Lithium Niobate Crystals
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