Investigation on the OH^− absorption and blue photorefractive properties in Zr:Ru:Fe:LiNbO_3 crystals as a function of Li composition

Xu, Chao; Lei, Zuotao; Zhu, Chongqiang; Yang, Chunhui; Zhang, Chunlei; Sun, Ting; Wang, Rui; Xu, Yuheng

doi:10.1364/josab.29.002814

“…For comparison, that of Mg 5.0 :LN and Zr 2.0 :LN crystals are also listed. It can be seen from the table that the component peaks of Zr 2.0 :LN are located at 3475, 3485, and 3495 cm −1 , respectively, which agree with the previous results 38 , and the shift in component peaks is connected with the formation of OH − – clusters. Moreover, with increased doping concentration of ZrO 2 , the relative intensity of OH − – band will increase 39 .…”

Section: Resultssupporting

confidence: 91%

Room temperature 90° phase-matching in zirconium and magnesium co-doped lithium niobate crystals

Kong

¹

,

Liu

²

,

Ge

³

et al. 2018

Sci Rep

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Laser has been widely used in many aspects, by now it is difficult to get each frequency that we want, and frequency conversion is an effective way to obtain different frequency laser through a nonlinear optical crystal. MgO-doped LiNbO3 (Mg:LN) crystal has usually been used for second harmonic generation (SHG) through temperature-matching configuration with a stove, till now a room temperature 90° phase-matching is still lacking. Here we find that the SHG of Nd:YAG laser is achieved at 26.1 °C while the optical damage resistance is higher than 6.5 MW/cm2 in the ZrO2 and MgO co-doped LiNbO3 (Zr,Mg:LN) crystal. Moreover, the monotonic decrease of phase-matching temperature is firstly found with the increase of doping concentration. These unusual properties may be attributed to the formation of + defect pairs. Our work suggests that Zr,Mg:LN crystal may be an attractive candidate for nonlinear optical applications.

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“…The realization of holographic storage is based on the photorefractive effect of materials [20,21]. two-wavelength nonvolatile experiment is used to test the photorefractive performance.…”

Section: B Two-wavelength Nonvolatile Analysismentioning

confidence: 99%

The Influence of the [Li]/[Nb] Ratio on the Holographic Storage Performance of Mgfeculinbo3 Crystals

Dai,

Wang

2024

Preprint

0

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Four groups of Mg:Fe:Cu:LiNbO₃ crystals with different [Li]/[Nb] ratios were prepared using the Czochralski method. The crystals were tested using infrared absorption spectroscopy (IR) to analyze ion occupation, and their optical birefringence performance was tested through two-wave coupling experiments. The crystals' resistance to optical damage was tested using the exposure energy flux threshold method. The results showed that when the [Li]/[Nb] ratio exceeded 1.20, the doped ions began to enter the Nb site. As the [Li]/[Nb] ratio increased, the optical birefringence performance and resistance to optical damage of the crystals gradually improved. When the [Li]/[Nb] ratio was 1.38, aside from an increase in grating erasure time, the writing speed, diffraction efficiency, sensitivity, dynamic range, and photoconductivity were all optimal. At this ratio, the Mg:Fe:Cu:LiNbO₃ crystal exhibited the best holographic storage performance.

show abstract

“…The realization of holographic storage is based on the photorefractive effect of materials [20,21]. two-wavelength nonvolatile experiment is used to test the photorefractive performance.…”

Section: B Two-wavelength Nonvolatile Analysismentioning

confidence: 99%

The Influence of the [Li]/[Nb] Ratio on the Holographic Storage Performance of Mgfeculinbo3 Crystals

Dai,

Wang

2024

Preprint

0

View full text Add to dashboard Cite

Four groups of Mg:Fe:Cu:LiNbO₃ crystals with different [Li]/[Nb] ratios were prepared using the Czochralski method. The crystals were tested using infrared absorption spectroscopy (IR) to analyze ion occupation, and their optical birefringence performance was tested through two-wave coupling experiments. The crystals' resistance to optical damage was tested using the exposure energy flux threshold method. The results showed that when the [Li]/[Nb] ratio exceeded 1.20, the doped ions began to enter the Nb site. As the [Li]/[Nb] ratio increased, the optical birefringence performance and resistance to optical damage of the crystals gradually improved. When the [Li]/[Nb] ratio was 1.38, aside from an increase in grating erasure time, the writing speed, diffraction efficiency, sensitivity, dynamic range, and photoconductivity were all optimal. At this ratio, the Mg:Fe:Cu:LiNbO₃ crystal exhibited the best holographic storage performance.

show abstract

Investigation on the OH^− absorption and blue photorefractive properties in Zr:Ru:Fe:LiNbO_3 crystals as a function of Li composition

Cited by 6 publications

References 28 publications

Room temperature 90° phase-matching in zirconium and magnesium co-doped lithium niobate crystals

Room temperature 90° phase-matching in zirconium and magnesium co-doped lithium niobate crystals

The Influence of the [Li]/[Nb] Ratio on the Holographic Storage Performance of Mgfeculinbo3 Crystals

The Influence of the [Li]/[Nb] Ratio on the Holographic Storage Performance of Mgfeculinbo3 Crystals

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