Abstract

The real part n₂′ of the complex nonlinear refractive-index coefficients of ruby crystal (Cr³⁺:Al₂O₃) are measured by the Mach–Zehnder interferometric method. The n₂′ values measured at 514.5 nm for the light polarization perpendicular (σ) and parallel (π) to the crystal c axis are (2.81 ± 0.36) × 10⁻⁸ and (1.33 ± 0.17) × 10⁻⁸ cm²/W, respectively. From the results obtained the ratio of the polarizability difference between the excited and ground states of Cr³⁺ in ruby for σ polarization to that for π polarization is found to be 1.05 ± 0.30.

© 1990 Optical Society of America

Differential interferometric technique for the measurement of the nonlinear index of refraction of ruby and GdAlO₃:Cr⁺³

Tomaz Catunda, José P. Andreeta, and Jarbas C. Castro
Appl. Opt. 25(14) 2391-2395 (1986)

Measurement of the refractive index and thermal refractive index coefficients of Nd:YAP crystal

Zhengdong Zeng, Hongyuan Shen, Miaoliang Huang, Hao Xu, Ruirong Zeng, Yuping Zhou, Guifang Yu, and Chenghui Huang
Appl. Opt. 29(9) 1281-1286 (1990)

Spectral measurement of the nonlinear refractive index in ZnSe using self-bending of a pulsed laser beam

Y. J. Ding, C. L. Guo, G. A. Swartzlander, J. B. Khurgin, and A. E. Kaplan
Opt. Lett. 15(24) 1431-1433 (1990)

Dispersion effects in four-wave mixing measurements of ions in solids

Richard C. Powell and Stephen A. Payne
Opt. Lett. 15(21) 1233-1235 (1990)

Direct measurement of the nonlinear refractive-index coefficient γ at 355 nm in fused silica and in BK-10 glass

W. T. White, W. L. Smith, and D. Milam
Opt. Lett. 9(1) 10-12 (1984)