Pyroelectric properties of real LiNbO3 single crystals grown from a congruent melt

Shaldin, Yu. V.; Gabrielyan, V. T.; Matyjasik, S.

doi:10.1134/s1063774508050209

Cited by 12 publications

(7 citation statements)

References 13 publications

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“…Without discharging, from 4.4 -292 K, we would expect an electric field build-up [24] of the order of |∆E| = |∆Ps| / 0 = 1.3 MV mm −1 , where 0 is the electric field constant. Such fields, larger than the coercive field strength of 21 kV mm −1 [25], would likely be sufficient to affect the periodic poling irreversibly.…”

Section: Transient Spectral Dynamicsmentioning

confidence: 99%

Cryogenic second harmonic generation in periodically-poled lithium niobate waveguides

Bartnick,

Santandrea,

Hoepker

et al. 2020

Preprint

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Prospective integrated quantum optical technologies will combine nonlinear optics and components requiring cryogenic operating temperatures. Despite the prevalence of integrated platforms exploiting χ (2) -nonlinearities for quantum optics, for example used for quantum state generation and frequency conversion, their material properties at low temperatures are largely unstudied. Here, we demonstrate the first second harmonic generation in a fiber-coupled lithium niobate waveguide at temperatures down to 4.4 K. We observe a reproducible shift in the phase-matched pump wavelength within the telecom band, in addition to transient discontinuities while temperature cycling. Our results establish lithium niobate as a versatile nonlinear photonic integration platform compatible with cryogenic quantum technologies.

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Section: Transient Spectral Dynamicsmentioning

confidence: 99%

Cryogenic second harmonic generation in periodically-poled lithium niobate waveguides

Bartnick,

Santandrea,

Hoepker

et al. 2020

Preprint

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“…Pyroelectric properties of congruent lithium niobate have been investigated optically 19,20 and electrically. [21][22][23] It has been shown that the pyroelectric coefficient depends on the lithium concentration 23 and several anomalies have been reported in the vicinity of 50 C and interpreted as an effect of the slow motion of domain walls. 21 The purpose of this work is to present the influence of the poling process on the dielectric properties of conductivity of undoped and 5%-doped MgLN single crystals along the ferroelectric c-axis between À100 C and 200 C are used to evidence clustering and breaking of polar defects.…”

Section: Introductionmentioning

confidence: 99%

Field induced modification of defect complexes in magnesium-doped lithium niobate

Meyer

Nataf

Granzow

2014

Journal of Applied Physics

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Light-induced superlow electric field for domain reversal in near-stoichiometric magnesium-doped lithium niobateThe sintering temperature effects on the electrical and dielectric properties of Li 0.05 Ti 0.02 Ni 0.93 O ceramics prepared by a direct thermal decomposition method Dielectric and ac conductivity studies on undoped and MgO-doped near-stoichiometric lithium tantalate crystals Dielectric constant, thermally stimulated depolarization currents (TSDC), and conductivity of undoped and 5% Mg-doped LiNbO 3 single crystals between À100 C and 200 C have been investigated. A Debye-like dielectric relaxation with an activation energy of 135 meV is observed in the Mg-doped material, but not in undoped crystals. On heating this relaxation disappears near 140 C and does not reappear after cooling. Anomalies observed in TSDC around this temperature are attributed to the motion of lithium vacancies, in agreement with conductivity measurements. It is proposed that in thermal equilibrium the electrons from the Mg • Li donors are trapped in (4Mg • Li þ 4V 0 Li ) defect complexes. High-temperature poling breaks these defect complexes. The transition of the liberated electrons between the Mg • Li donor centers and the Nb Nb forming the conduction band gives rise to the observed dielectric relaxation. V C 2014 AIP Publishing LLC.

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“…Recently, the pyroelectric effect in LN was used to demonstrate applications like pyrolitons for light guiding 4,5 or the photocatalytic disinfection. 6 Different methods, electrical [7][8][9][10][11] or optical, 12 were previously used to measure the pyroelectric coefficient of LN. The results are spread in the range (À104 to À40) lC/(m 2 Á K).…”

Section: Introductionmentioning

confidence: 99%

Interferometric measurement of the pyroelectric coefficient in lithium niobate

Popescu

Petriş

Vlad

2013

Journal of Applied Physics

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Pyroelectric properties of real LiNbO3 single crystals grown from a congruent melt

Cited by 12 publications

References 13 publications

Cryogenic second harmonic generation in periodically-poled lithium niobate waveguides

Cryogenic second harmonic generation in periodically-poled lithium niobate waveguides

Field induced modification of defect complexes in magnesium-doped lithium niobate

Interferometric measurement of the pyroelectric coefficient in lithium niobate

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