Effect of Fe concentration on the nonlinear refraction and reverse saturable absorption in ferroelectric X-cut LiNbO3 crystal

H. L. Saadon

doi:10.3788/COL201513.071901

Journals >Chinese Optics Letters >Volume 13 >Issue 7 >Page 071901 > Article

Chinese Optics Letters
Vol. 13, Issue 7, 071901 (2015)

Effect of Fe concentration on the nonlinear refraction and reverse saturable absorption in ferroelectric X-cut LiNbO₃ crystal

H. L. Saadon^*

Author Affiliations

Laser Applications and Optical Materials Group, Department of Physics, College of Science, University of Basrah, Basrah 61004, Iraq

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DOI: 10.3788/COL201513.071901 Cite this Article Set citation alerts

H. L. Saadon. Effect of Fe concentration on the nonlinear refraction and reverse saturable absorption in ferroelectric X-cut LiNbO₃ crystal[J]. Chinese Optics Letters, 2015, 13(7): 071901 Copy Citation Text

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Fig. 1. Optical absorption spectra of ferroelectric X-cut LiNbO3 crystals at different concentrations of Fe.

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Closed-aperture Z-scan measurements of the ferroelectric X-cut LiNbO3 crystals at doping Fe concentration for (a) 0.0, (b) 0.05, (c) 0.1, and (d) 0.15 mol% Fe. Solid line, theoretical fit.

Fig. 2. Closed-aperture Z-scan measurements of the ferroelectric X-cut LiNbO3 crystals at doping Fe concentration for (a) 0.0, (b) 0.05, (c) 0.1, and (d) 0.15 mol% Fe. Solid line, theoretical fit.

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Fig. 3. Open-aperture Z-scan measurements of the ferroelectric X-cut LiNbO3 crystals at different doping Fe concentrations. Solid line, theoretical fit.

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$Nonlinear refractive index n2 and nonlinear absorption coefficient β as a function of Fe concentration for ferroelectric X-cut LiNbO3 crystals.$

Fig. 4. Nonlinear refractive index n2 and nonlinear absorption coefficient β as a function of Fe concentration for ferroelectric X-cut LiNbO3 crystals.

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Sample	$n_{2}$ $({cm}^{2} / W)$	$β$ (cm/kW)
Fe (0.0 mol%): ${LiNbO}_{3}$	$- 3.12 \times 10^{- 8}$	2.36
Fe (0.05 mol%): ${LiNbO}_{3}$	$- 4.75 \times 10^{- 8}$	3.73
Fe (0.1 mol%): ${LiNbO}_{3}$	$- 6.11 \times 10^{- 8}$	5.15
Fe (0.15 mol%): ${LiNbO}_{3}$	$- 7.84 \times 10^{- 8}$	7.05

Table 1. Nonlinear Refractive Index n2 and Nonlinear Absorption Coefficient β at Different Fe Concentrations in Ferroelectric X-Cut LiNbO3 Crystals

H. L. Saadon. Effect of Fe concentration on the nonlinear refraction and reverse saturable absorption in ferroelectric X-cut LiNbO₃ crystal[J]. Chinese Optics Letters, 2015, 13(7): 071901

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