Enhanced Ultraviolet Damage Resistance in Magnesium Doped Lithium Niobate Crystals through Zirconium Co-Doping

MgO-doped LiNbO3 (LN:Mg) is famous for its high resistance to optical damage, but this phenomenon only occurs in visible and infrared regions, and its photorefraction is not decreased but enhanced in ultraviolet region. Here we investigated a series of ZrO2 co-doped LN:Mg (LN:Mg,Zr) regarding their ultraviolet photorefractive properties. The optical damage resistance experiment indicated that the resistance against ultraviolet damage of LN:Mg was significantly enhanced with increased ZrO2 doping concentration. Moreover, first-principles calculations manifested that the enhancement of ultraviolet damage resistance for LN:Mg,Zr was mainly determined by both the increased band gap and the reduced ultraviolet photorefractive center O2−/−. So, LN:Mg,Zr crystals would become an excellent candidate for ultraviolet nonlinear optical material.

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First-principles investigation of the effects of Ni and Y co-doped on destabilized MgH2

RSC Advances ◽

10.1039/c5ra23996f ◽

2016 ◽

Vol 6 (28) ◽

pp. 23110-23116 ◽

Cited By ~ 9

Author(s):

Gaili Sun ◽

Yuanyuan Li ◽

Xinxin Zhao ◽

Jianbao Wu ◽

Lili Wang ◽

...

Keyword(s):

First Principles ◽

Doping Effect ◽

First Principles Calculations ◽

Co Doping ◽

Co Doped

The Ni and Y co-doping effect on the structural stabilities and dehydrogenation properties of destabilized MgH2 was studied by first-principles calculations.

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First-principles Calculation of the Electronic Structure and Optical Properties of ZnO Co-doped with Nb and Ta

Materials Science ◽

10.5755/j01.ms.25.3.19956 ◽

2019 ◽

Vol 25 (3) ◽

pp. 238-245 ◽

Cited By ~ 1

Author(s):

Jinpeng WANG ◽

Tao SHEN ◽

Hongchen LIU

Keyword(s):

Optical Properties ◽

Electronic Structure ◽

First Principles ◽

First Principles Calculation ◽

Ultraviolet Region ◽

First Principle ◽

Co Doping ◽

First Principle Calculations ◽

Function Loss ◽

Co Doped

First-principle calculations have been performed to investigate the electronic structure and optical properties of ZnO co-doped with Nb and Ta. The three doping structures are set to: Zn0.9375Nb0.0625O, Zn0.9375Ta0.0625O and Zn0.875Nb0.0625Ta0.0625O. The experiments show that co-doping with Nb and Ta narrows the band gap. And it causes the Fermi level to shift upwards and enter the conduction band, while enhancing the conductivity of the doped system. In addition, it has been determined that the dielectric imaginary part of the dopant system is larger than that of the pure ZnO in the low energy region. The absorption side of the dopant system, on the other hand, exhibits a redshift. Furthermore, the transmittance of the ultraviolet region is significantly increased, and the function loss spectrum appears to redshift. This will provide a good theoretical basis for the study and the applications of photoelectric materials co-doped with Nb and Ta. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.19956

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EFFECT OF HfO2-CODOPING CONCENTRATION ON THE OPTICAL PROPERTIES OF Er3+-DOPED LiNbO3

Modern Physics Letters B ◽

10.1142/s0217984910022561 ◽

2010 ◽

Vol 24 (04n05) ◽

pp. 495-502 ◽

Cited By ~ 3

Author(s):

LI DAI ◽

YAN-QING SU ◽

SHI-PING WU ◽

YANG MU ◽

JING-JIE GUO ◽

...

Keyword(s):

Infrared Absorption Spectrum ◽

Czochralski Technique ◽

Visible Absorption ◽

Damage Resistance ◽

Transmitted Beam ◽

Structure Defects ◽

Optical Damage ◽

X Ray ◽

Co Doping ◽

Co Doped

A series of Hf , Er co-doped LiNbO 3 crystals were grown by Czochralski technique with 1 mol% of Er 2 O 3 and with 2, 4, 6 and 8 mol% of HfO 2, respectively. The optical damage resistance of Hf : Er : LiNbO 3 crystals was studied by the transmitted beam pattern distortion method. The optical damage resistance of Hf (6 mol%): Er : LiNbO 3 crystals is about two orders of magnitude higher than that in Hf : Er : LiNbO 3. The X-ray power diffraction, the ultraviolet-visible absorption spectra and the infrared absorption spectrum were measured and discussed in terms of the spectrometric characterization and the defect structure of crystals. The results showed that with mild co-doping with HfO 2, Er 3+ substitutes Nb 5+, whereas with heavy co-doping, a part of Er 3+ substitutes Li +. The structure defects were discussed in this paper to explain the improvement of the optical damage resistance in the Hf : Er : LiNbO 3.

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Tuning the electronic and optical properties of phosphorene by transition-metal and nonmetallic atom co-doping

RSC Advances ◽

10.1039/c5ra22004a ◽

2016 ◽

Vol 6 (13) ◽

pp. 10919-10929 ◽

Cited By ~ 27

Author(s):

Long-Juan Kong ◽

Guang-Hua Liu ◽

Yu-Jun Zhang

Keyword(s):

Density Functional Theory ◽

Optical Properties ◽

Transition Metal ◽

First Principles ◽

Density Functional ◽

First Principles Calculations ◽

Functional Theory ◽

Electronic And Optical Properties ◽

Co Doping ◽

Co Doped

The electronic and optical properties of phosphorene co-doped with vanadium and non-metallic atoms (B, C, N and O) are investigated by employing first-principles calculations based on density functional theory.

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