Growth and properties of Ru-doped lithium niobate crystal

Chiang, Chang Hung; Chen, Jyh Chen

doi:10.1016/j.jcrysgro.2006.06.022

Cited by 20 publications

(24 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kitamura et al found that line defects propagate to the edge of a crystal if the crystal-melt interface is more convex toward the melt [7]. Chiang et al showed that showed that a slightly convex interface towards the melt is better for growth of high quality single crystals [10]. In our recent study, it was found that the crystal-melt interface shape during FZ growth can be controlled by tilting the mirror in TMFZ method to improve the crystal quality [12].…”

Section: Defect Analysismentioning

confidence: 67%

“…al. showed that the low-angle grain boundaries are markedly reduced when the solid-liquid interface is almost flat during crystal growth [9]. A slightly convex interface towards melt is better for improving the quality of crystals [10]. Recently, we reported that the interface shape can be controlled by tilting the mirror in the tilting-mirror-type floating zone (TMFZ) method as shown in Fig.1 [11].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optical Properties of Rutile Single Crystals Grown Under Pressure by Tilting-Mirror-Type Floating Zone Method

Sarker

2015

J. Sci. Res.

View full text Add to dashboard Cite

Rutile single crystals with high quality and high transparency were grown successfully by tilting-mirror-type floating zone (TMFZ) technique. The grown crystals were characterized by polarized optical microscopy, X-ray diffractometer, UV-visible spectrophotometer and etch pits density measurement. The effect of applied pressure during growth on the optical properties and defect density of the rutile crystals were investigated. It was found that the rutile crystals grown under the high oxygen pressure are bright and transparent due to the lower concentration of defects, but rutile crystals grown at ambient or lower oxygen pressure exhibit deep blue color due to presence of defects such as dislocations and grain boundaries. The crystals grown under high oxygen pressure contains no low-angle grain boundaries, indicating that it can be used for high efficiency optical devices.

show abstract

Section: Defect Analysismentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Optical Properties of Rutile Single Crystals Grown Under Pressure by Tilting-Mirror-Type Floating Zone Method

Sarker

2015

J. Sci. Res.

View full text Add to dashboard Cite

show abstract

“…LN single crystals are important materials for optical waveguides, mobile phones, piezoelectric sensors, optical modulators, photorefractive devices, optical frequency multipliers, surface acoustic wave devices and various linear and non linear optical applications [3][4][5][6][7] . It has negative uniaxial birefringence which depends slightly on the stoichiometry and strongly on the crystal structure and temperature 8 .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the control of the convexity is one of the important issues to overcome the limitations. A slightly convex interface towards melt is better for improving the quality of crystals 7 . We reported that the interface shape can be controlled by tilting the mirror in the tilting-mirror-type floating zone (TMFZ) method as shown in fig.1 16 .…”

Section: Introductionmentioning

confidence: 99%

Growth of Large Size Lithium Niobate Single Crystals of High Quality by Tilting-mirror-type Floating Zone Method

Sarker

2016

Mat. Res.

View full text Add to dashboard Cite

Large size high quality LiNbO 3 single crystals were grown successfully by tilting-mirror-type floating zone (TMFZ) technique. The grown crystals were characterized by X-ray diffraction, etch pits density measurement, Impedance analysis, Vibrating sample magnetometry (VSM) and UV-Visible spectrometry. The effect of mirror tilting during growth on the structural, electrical, optical properties and defect density of the LiNbO 3 crystals were investigated. It was found that the defect density in the crystals reduced for tilting the mirror in the TMFZ method. The chemical analysis revealed that the grown crystals were of high quality with uniform composition. The single crystals grown by TMFZ method contains no low-angle grain boundaries, indicating that they can be used for high efficiency optoelectronic devices.

show abstract

“…In our previous work, we successfully grew Ru:LiNbO 3 crystals doped with different Ru concentrations from congruent composition melts by the Czochralski method [17]. We studied some physical properties of Ru doped congruent lithium niobate and found that two absorption peaks appeared around 370 and 530 nm within the UV/VIS region.…”

Section: Introductionmentioning

confidence: 99%

Effect of post treatment on the photorefractive properties of Ru‐doped lithium niobate

Chiang

Chen²,

Chang

et al. 2007

Cryst. Res. Technol.

Self Cite

View full text Add to dashboard Cite

The effect of post treatment on the photorefractive properties of Ru-doped lithium niobate was studied. The absorption spectra examination of Ru-doped LiNbO 3 crystals with different post treatments showed that the absorption coefficient at 530 nm increased after the reduced treatment was employed and the absorption edge of the reduced crystal shifted towards the infrared band. On the contrary, the trend reversed after the oxidized treatment was employed. In addition, the photorefractive properties were investigated with the two-beam coupling method conducted via a 532 nm solid state laser. It was found that the oxidized Ru:LiNbO 3 had smaller exponential gain coefficient and diffraction efficiency because the charges in the shallow level were exchanged to the deep level. On the other hand, the reduced Ru:LiNbO 3 crystals had larger exponential gain coefficient and diffraction efficiency due to the increase of the Ru 3+ which existed in the shallow level. The response times of both oxidized and reduced Ru:LiNbO 3 were longer than those of the as-grown ones.

show abstract

Growth and properties of Ru-doped lithium niobate crystal

Cited by 20 publications

References 31 publications

Optical Properties of Rutile Single Crystals Grown Under Pressure by Tilting-Mirror-Type Floating Zone Method

Optical Properties of Rutile Single Crystals Grown Under Pressure by Tilting-Mirror-Type Floating Zone Method

Growth of Large Size Lithium Niobate Single Crystals of High Quality by Tilting-mirror-type Floating Zone Method

Effect of post treatment on the photorefractive properties of Ru‐doped lithium niobate

Contact Info

Product

Resources

About