Optical and non-linear optical investigations inLiNbO3:MgandLiNbO3:Zn

Volk, T. R.; Rubinina, N. M.; Pryalkin, Vladimir I; Krasnikov, V. V.; Волков, В. В.

doi:10.1080/00150199008211437

Cited by 62 publications

(19 citation statements)

References 3 publications

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“…The OH À absorption spectra of highly doped LiNbO 3 , such as MgO, ZnO, In 2 O 3 , and Sc 2 O 3 , have also been widely investigated [13][14][15][16]. And band shifts from 3484 to about 3535 cm À1 for divalent ions and to about 3507 cm À1 for trivalent ions were observed when the doping concentration is above a certain value (named as the threshold).…”

Section: Introductionmentioning

confidence: 97%

The OH− absorption spectra of low doped lithium niobate crystals

Kong

Zhang

et al. 2004

Infrared Physics & Technology

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Section: Introductionmentioning

confidence: 97%

The OH− absorption spectra of low doped lithium niobate crystals

Kong

Zhang

et al. 2004

Infrared Physics & Technology

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“…We obtained the transmission difference by subtracting the measured light transmission of LN:Bi from that of CLN, within the wavelength range from 300 nm to 600 nm. 14 The UV-visible transmission spectra of LN:Bi are shown in Fig. 3(a), and the transmission difference between LN:Bi and CLN are shown in the inserted figure, where we can see the obvious absorption peak.…”

Section: Uv-visible Absorption Spectramentioning

confidence: 99%

The photorefractive characteristics of bismuth-oxide doped lithium niobate crystals

et al. 2015

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Bismuth-doped lithium niobate (LN:Bi) crystals were grown by Czochralski method and their optical damage resistance, photorefraction, absorption spectra, and defect energy levels were investigated. The experimental results indicate that the photorefractive properties of LN:Bi were enhanced as compared with congruent one, the photorefractive response time was greatly shortened, the photorefractive sensitivity was increased, and the diffraction efficiency of near-stoichiometric LN:Bi (SLN:Bi) reached 31.72% and 49.08% at 532 nm and 488 nm laser, respectively (light intensity of 400 mW/cm2). An absorption peak at about 350 nm was observed in the absorption spectrum of LN:Bi. And the defect energy levels simulation indicates new defect levels appear in the forbidden gap of LN:Bi crystals. Therefore bismuth can act as photorefractive centers in LN crystals.

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“…[93][94][95][96][97][98] The properties of LN doped with optical damage resistant ions were first summarized in a review paper 10 and later in a book by Volk et al 99 Recently, Kong et al 100 reviewed advances in the photorefraction of doped LN, focusing on tetra-, penta-, and hexavalent ions, including doubly-and even triply-doped crystals. They concluded that LN triply doped by Zr, Fe, and Mn shows excellent non-volatile holographic storage properties, and V and Mo single-doped LN have fast response and multi-wavelength storage characteristics.…”

Section: Other Divalent Trivalent and Tetravalent Odr Dopantsmentioning

confidence: 99%

Growth, defect structure, and THz application of stoichiometric lithium niobate

Lengyel

Péter

Kovács

et al. 2015

Applied Physics Reviews

106

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Owing to the extraordinary richness of its physical properties, congruent lithium niobate has attracted multidecade-long interest both for fundamental science and applications. The combination of ferro-, pyro-, and piezoelectric properties with large electro-optic, acousto-optic, and photoelastic coefficients as well as the strong photorefractive and photovoltaic effects offers a great potential for applications in modern optics. To provide powerful optical components in high energy laser applications, tailoring of key material parameters, especially stoichiometry, is required. This paper reviews the state of the art of growing large stoichiometric LiNbO 3 (sLN) crystals, in particular, the defect engineering of pure and doped sLN with emphasis on optical damage resistant (ODR) dopants (e.g., Mg, Zn, In, Sc, Hf, Zr, Sn). The discussion is focused on crystals grown by the high temperature top seeded solution growth (HTTSSG) technique using alkali oxide fluxing agents. Based on high-temperature phase equilibria studies of the Li 2 O-Nb 2 O 5 -X 2 O ternary systems (X ¼ Na, K, Rb, Cs), the impact of alkali homologue additives on the stoichiometry of the lithium niobate phase will be analyzed, together with a summary of the ultraviolet, infrared, and far-infrared absorption spectroscopic methods developed to characterize the composition of the crystals. It will be shown that using HTTSSG from K 2 O containing flux, crystals closest to the stoichiometric composition can be grown characterized by a UV-edge position of at about 302 nm and a single narrow hydroxyl band in the IR with a linewidth of less than 3 cm À1 at 300 K. The threshold concentrations for ODR dopants depend on crystal stoichiometry and the valence of the dopants; Raman spectra, hydroxyl vibration spectra, and Z-scan measurements prove to be useful to distinguish crystals below and above the photorefractive threshold. Crystals just above the threshold are preferred for most nonlinear optical applications apart holography and have the additional advantage to minimize the absorption even in the far-infrared (THz) range. The review also provides a discussion on the progress made in the characterization of non-stoichiometry related intrinsic and extrinsic defect structures in doped LN crystals, with emphasis on ODR-ion-doped and/or closely stoichiometric systems, based on both spectroscopic measurements and theoretical modelling, including the results of first principles quantum mechanical calculations on hydroxyl defects. It will also be shown that new perspective applications, e.g., the generation of high energy THz pulses with energies on the tens-of-mJ scale, are feasible with ODR-doped sLN crystals if optimal conditions, including the contact grating technique, are applied. V C 2015 AIP Publishing LLC.

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Optical and non-linear optical investigations inLiNbO₃:MgandLiNbO₃:Zn

Cited by 62 publications

References 3 publications

The OH− absorption spectra of low doped lithium niobate crystals

The OH− absorption spectra of low doped lithium niobate crystals

The photorefractive characteristics of bismuth-oxide doped lithium niobate crystals

Growth, defect structure, and THz application of stoichiometric lithium niobate

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