Growth and optical damage resistance of Sc, Er Co-doped LiNbO3 crystals

2005 ◽  
Vol 40 (7) ◽  
pp. 649-653 ◽  
Author(s):  
X. H. Zhen ◽  
Q. Li ◽  
H. T. Li ◽  
Y. H. Xu ◽  
L. C. Zhao
Keyword(s):  
Damage Resistance ◽  
Optical Damage ◽  
Co Doped

scholarly journals Photorefractive Properties of Molybdenum and Hafnium Co-Doped LiNbO3 Crystals

Crystals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 322 ◽  
Author(s):  
Ling Zhu ◽  
Dahuai Zheng ◽  
Shahzad Saeed ◽  
Shuolin Wang ◽  
Hongde Liu ◽  
...  
Keyword(s):  
Response Time ◽  
Absorption Spectra ◽  
High Intensity ◽  
Threshold Concentration ◽  
Czochralski Technique ◽  
Damage Resistance ◽  
Optical Damage ◽  
Uv Visible ◽  
532 Nm ◽  
Co Doped

A series of LiNbO3: Mo, Hf crystals with 0.5 mol % fixed MoO3 and various HfO2 concentrations (0.0, 2.0, and 3.5 mol %) were grown by the Czochralski technique. The photorefractive properties of the LiNbO3: Mo, Hf crystals were investigated by two-wave coupling measurements and the beam distortion method was employed to obtain the optical damage resistance ability. The UV-visible and OH− absorption spectra were also studied. The experimental results imply that the photorefractive properties of LiNbO3: Mo crystals at laser wavelengths of 532, 488, and 442 nm can be greatly enhanced by doping HfO2 over the threshold concentration. At 442 nm especially, the response time of LN: Mo, Hf3.5 can be shortened to 0.9 s with a diffraction efficiency of 46.07% and a photorefractive sensitivity reaching 6.28 cm/J. Besides this, the optical damage resistance at 532 nm is 3 orders of magnitude higher than that of the mono-doped LiNbO3: Mo crystal, which is beneficial for applying it in the field of high-intensity lasers.

Effect of Zn and Fe Concentrations on Structure and Optical Damage Resistances of Near Stoichiometric Zn:Fe:LiNbO3 Crystals

2005 ◽  
Vol 475-479 ◽  
pp. 1677-1680
Author(s):  
Hong Tao Li ◽  
Zhi Jie Sun ◽  
Shaojian Ye ◽  
Wei Cai ◽  
Lian Cheng Zhao
Keyword(s):  
High Resistance ◽  
Doping Concentration ◽  
Solution Growth ◽  
Linbo3 Crystal ◽  
Damage Resistance ◽  
Optical Damage ◽  
Zn Concentration ◽  
Top Seeded Solution Growth ◽  
Stoichiometric Linbo3 Crystal ◽  
Co Doped

Zn,Fe co-doped near stoichiometric LiNbO3 crystals with variant Zn concentrations and with same Fe concentrations were grown by top-seeded-solution-growth (TSSG) method. The optical damage resistances of SLN crystals were studied by the method of transmittance facula distortion. The UV-Vis spectra showed that the grown undoping crystal had a composition very close to stoichiometric LiNbO3 crystal, and the absorption edges moved as the doping concentration changed. The optical damage experiments showed that, the crystal with 2mol% of Zn was with high resistance to optical damage, and the optical damage resistance was improved evidently as the Zn concentration increased further.

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

2010 ◽  
Vol 24 (04n05) ◽  
pp. 495-502 ◽  
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.

scholarly journals The simultaneous enhancement of photorefraction and optical damage resistance in MgO and Bi2O3 co-doped LiNbO3 crystals

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Dahuai Zheng ◽  
Yongfa Kong ◽  
Shiguo Liu ◽  
Muling Chen ◽  
Shaolin Chen ◽  
...  
Keyword(s):  
Damage Resistance ◽  
Optical Damage ◽  
Co Doped

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

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1017
Author(s):  
Tengfei Kong ◽  
Yi Luo ◽  
Weiwei Wang ◽  
Hanxiao Kong ◽  
Zhiqin Fan ◽  
...  
Keyword(s):  
First Principles ◽  
Ultraviolet Region ◽  
First Principles Calculations ◽  
Damage Resistance ◽  
Optical Damage ◽  
Co Doping ◽  
Excellent Candidate ◽  
Ultraviolet Damage ◽  
Lithium Niobate Crystals ◽  
Co Doped

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.

Defect structure and optical damage resistance of Zn:Fe:LiNbO3 crystals

2003 ◽  
Vol 76 (6) ◽  
pp. 655-659 ◽  
Author(s):  
X.H. Zhen ◽  
L.C. Zhao ◽  
Y.H. Xu
Keyword(s):  
Defect Structure ◽  
Damage Resistance ◽  
Optical Damage

Structure and optical damage resistance of near-stoichiometric Zn:Fe:LiNbO3 crystals

2008 ◽  
Vol 40 (7) ◽  
pp. 941-945 ◽  
Author(s):  
Fu Ri Ling ◽  
Zhi Hong He ◽  
Jian Quan Yao ◽  
Baio Wang ◽  
Shao Ji Jiang
Keyword(s):  
Damage Resistance ◽  
Optical Damage

scholarly journals Linear Tuning of Phase-Matching Temperature in LiNbO3:Zr Crystals by MgO Co-Doping

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4155
Author(s):  
Tengfei Kong ◽  
Hongde Liu ◽  
Liyun Xue ◽  
Weiwei Wang ◽  
Shahzad Saeed ◽  
...  
Keyword(s):  
Room Temperature ◽  
Incident Angle ◽  
Phase Matching ◽  
Defect Structures ◽  
Defect Analysis ◽  
High Quality ◽  
Damage Resistance ◽  
Co Doping ◽  
532 Nm ◽  
Co Doped

We grew a series of co-doped LiNbO3 crystals with fixed 1.5 mol % ZrO2 and various MgO concentrations (1.0, 3.0, 4.0, 6.0 mol %), and investigated their optical properties and defect structures. By 3.0 mol % MgO co-doping, the optical damage resistance at 532 nm reached 6.5 × 106 W/cm2, while the phase-matching temperature for doubling 1064 nm was only 29.3 °C—close to room temperature—which was conducive to realizing the 90° phase matching at room temperature by slightly modulating the incident angle of the fundamental beam. Notably, we found that the phase-matching temperature increased linearly with the increase of MgO doping, and this linear dependence helped us to grow the high-quality crystal for room temperature 90° phase matching. Moreover, the defect analysis indicated that the linear tuning of phase-matching temperature might be attributed to Mg Li + + Zr Nb − neutral pairs in crystals.

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