Study and experimental setting of the Z-scan method for accurate nonlinear refractive index and absorption metrology

Franck Billard; Thomas Olivier; Hassan Akhouayri

doi:10.1117/12.524852

10 June 2004 Study and experimental setting of the Z-scan method for accurate nonlinear refractive index and absorption metrology

Franck Billard, Thomas Olivier, Hassan Akhouayri

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Proceedings Volume 5273, Laser-Induced Damage in Optical Materials: 2003; (2004) https://doi.org/10.1117/12.524852
Event: XXXV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2003, Boulder, Colorado, United States

Abstract

The Z-scan method has been widely used for the estimation of the nonlinear refractive index and the nonlinear absorption coefficient of various materials which usually show quite important nonlinear behaviors. However, it still remains difficult to perform accurate measurements of small nonlinear phase shifts since the major drawbacks of the method are an important multiplicative noise and a great sensitivity to the incident beam spatial quality and to the pulses temporal profile. In order to measure accurately the nonlinear refractive index of optical glasses in the nanosecond regime we had to improve the Z-scan method sensitivity and to reduce drastically the numerous possible errors. We have developed and optimized a Z-scan experimental setup which is well-adapted for the metrology of the nonlinear refractive index.

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Franck Billard, Thomas Olivier, and Hassan Akhouayri "Study and experimental setting of the Z-scan method for accurate nonlinear refractive index and absorption metrology", Proc. SPIE 5273, Laser-Induced Damage in Optical Materials: 2003, (10 June 2004); https://doi.org/10.1117/12.524852

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