Optical parameters of paratellurite crystals

Kolesnikov, A. I.; Kaplunov, I. A.; Ilyashenko, S. E.; Molchanov, V. N.; Гречишкин, Р. М.; Arkhipova, M. A.; Tretyakov, Sergei A.

doi:10.1134/s1063774512070115

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…Thus, for previous z-scan experiments (Fig. 6b), the respective positions for the maximum and minimum intensities are shifted in respect to 0 ○ and 45 ○ , because the beam waist crosses the whole sample thickness, and consequently the known optical activity of paratellurite 14,23 must be taken into account. 13 Considering the optical activity of such TeO 2 − α crystal, with a thickness of l = 565 μm which induces a dextro rotation to ⃗ Epump by an angle ρ, one expects to detect a minimum of Re[χ…”

Section: B In-plane Modulation Of the Nonlinear Refractive Indexmentioning

confidence: 92%

“…Additionally, paratellurite material is known for being optically active. 14,23 Indeed, the polarization direction of the laser beam can progressively dextro-rotate along the propagation across the thickness of the crystal, and emerge from the latter with a rotation angle ρ (given in ○ /mm), according to a law modelised by Kolesnikov et al 23 and summarized here with the Eq. 6:…”

Section: B In-plane Modulation Of the Nonlinear Refractive Indexmentioning

confidence: 99%

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Measurement of the third order nonlinear susceptibility of paratellurite single crystal using multiplex CARS

et al. 2019

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We report the extraction of the real part of the third order nonlinear susceptibility for a c-cut paratellurite (TeO 2 − α) single crystal using the nonresonant contribution of the multiplex coherent anti-Stokes Raman scattering (M-CARS) signal. Using fused silica and SF57 as nonlinear reference materials, we derive the absolute value of the real part of the electronic third order susceptibility and we evidence the in-plane modulation of the nonlinear refractive index. These results are in total agreement with those recently obtained by the z-scan method.

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Section: B In-plane Modulation Of the Nonlinear Refractive Indexmentioning

confidence: 92%

Section: B In-plane Modulation Of the Nonlinear Refractive Indexmentioning

confidence: 99%

Measurement of the third order nonlinear susceptibility of paratellurite single crystal using multiplex CARS

et al. 2019

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Extra pure tellurium oxide for the growth of high quality paratellurite crystals

Grishechkin

Islam

Khomyakov

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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Tellurium oxide (IV) single crystals are in demand materials for manufacturing acousto-optical devices optical fibers for IR wavelength range. The initial material for production of active and passive optical materials must have purity better than 99.999 wt% and extremely low concentration of the residual water. The main method of synthesis of TeO2 is oxidation in nitric acid followed by recrystallization from HCl is complicated, also amount of used high purity acids and waste are very high. Besides the residual water content is no less than 10 ppm. In the research we have developed the procedure for the synthesis of high-purity tellurium (IV) oxide without the usage of liquid oxidants. The process of oxidation of elementary Te was carried out in a flowing quartz glass reactor. Air oxygen was used as an oxidizing agent. The oxidation was conducted at 600-670°C during 24 hours. The produced material was a fine crystalline powder of acicular dendritic crystals of bright white color, identified as β-TeO2 due to X-ray. It was as pure as 5N7 due to ICP-MS. The β-TeO2 crystal grown form the synthesized water-free preparation has demonstrated better optical properties towards the crystals grown from commercial TeO2, produced by the «wet» technology.

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Acousto-optical imaging spectropolarimetric devices: new opportunities and developments

et al. 2014

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Optical parameters of paratellurite crystals

Cited by 6 publications

References 4 publications

Measurement of the third order nonlinear susceptibility of paratellurite single crystal using multiplex CARS

Measurement of the third order nonlinear susceptibility of paratellurite single crystal using multiplex CARS

Extra pure tellurium oxide for the growth of high quality paratellurite crystals

Acousto-optical imaging spectropolarimetric devices: new opportunities and developments

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