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Linear and nonlinear optical properties of MgO:LiTaO3

Abstract : We derive new temperature dependent Sellmeier equations for the extra-ordinary and ordinary refractive indices of 0.5% MgO-doped stoichiometric LiTaO3 crystal. The equations are based on quasi phase-matched frequency conversion measurements, as well as on interferometric measurements of the thermal expansion and thermal dispersion. These equations fit experimental data over wide spectral ranges: 0.35–6 μm for the extra-ordinary wave and 0.375–3.75 μm for the ordinary wave, from room temperature up to 200°C. The nonlinear optical measurements set lower-limit values for the d 33, d 22, and d 24 elements of the second-order susceptibility tensor χ (2) of 12.9, 1.54, and 0.46 pm/V, respectively. The interferometric measurements enable one to determine the linear and quadratic expansion coefficients of 1.45762e−5 1/°C, and 2.68608e−8 (1/°C)2, respectively. The Sellmeier equations are in good agreement with previously published data.
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https://hal.archives-ouvertes.fr/hal-00405904
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Submitted on : Tuesday, July 21, 2009 - 12:02:41 PM
Last modification on : Saturday, February 5, 2022 - 9:10:04 AM

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I. Dolev, A. Ganany-Padowicz, O. Gayer, A. Arie, J. Mangin, et al.. Linear and nonlinear optical properties of MgO:LiTaO3. Applied Physics B - Laser and Optics, Springer Verlag, 2009, 96 (2-3), pp.423-432. ⟨10.1007/s00340-009-3502-3⟩. ⟨hal-00405904⟩

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