Population lensing effect in Cr:LiSAF probed by Z-scan technique

OPTICS COMMUNICATIONS

卷:260

Article

Passilly, N ; Haouas, E ; Ménard, V ; Moncorgé, R ; Aït-Ameur, K

关键词: laser materials;    optically induced thermo-optical effects;    population lensing effect;    nonlinear lensing effect;    Z-scan;   

DOI  :  10.1016/j.optcom.2005.11.019

来源: Elsevier

【 摘 要 】

An experiment has been performed for measuring a nonlinear refractive index that is due to the polarizability difference Delta alpha p between excited (T-4(2)) and ground ((4)A(2)) states in a Cr3+:LiSAF crystal at lambda = 647 nm. The latter one is responsible for a population lensing effect which has been monitored by using the eclipsing Z-scan technique. We have performed a data analysis that allows to distinguish between thermal and population contributions to the lensing effect. We have found Delta alpha p = 4.6 x 10(-25) cm(3) which is ill a good agreement with our previous measurements with a different technique. (c) 2005 Elsevier B.V. All rights reserved.

【 授权许可】

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