Linear and nonlinear optical properties of MgO:LiTaO3

I. Dolev*, A. Ganany-Padowicz, O. Gayer, A. Arie, J. Mangin, G. Gadret

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)423-432
Number of pages10
JournalApplied Physics B: Lasers and Optics
Volume96
Issue number2-3
DOIs
StatePublished - Aug 2009

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