Study on Z-scan characteristics for a large nonlinear phase shift
JOSA B, Vol. 22, Issue 9, pp. 1911-1916 (2005)
http://dx.doi.org/10.1364/JOSAB.22.001911
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Abstract
Using the Gaussian decomposition (GD) method, we studied the characteristics of a Z scan for a thin nonlinear medium with a large nonlinear phase shift induced by a pulsed laser. It has been verified that the GD method is still valid for analyses of Z-scan measurements with a large nonlinear phase shift and is better than some others, i.e., Fresnel-Kirchhoff diffraction and the aberration-free approximation model. By comparing the peak-to-valley configuration of Z-scan curves for a large nonlinear phase shift induced by a pulsed laser with that by a cw laser, we found that some peak-to-valley features of Z-scan curves appear as the aperture size or the light intensity increases in the case of a large nonlinear phase shift. Meanwhile, we carried out the Z-scan experiments of pure CS2 by a picosecond pulsed laser to verify the theoretical calculations in the case of a large nonlinear phase shift. The experimental results agree well with the theoretical calculations.
© 2005 Optical Society of America
OCIS Codes
(000.4430) General : Numerical approximation and analysis
(190.0190) Nonlinear optics : Nonlinear optics
(190.3270) Nonlinear optics : Kerr effect
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(190.5940) Nonlinear optics : Self-action effects
Citation
Shu-Qi Chen, Zhi-Bo Liu, Wei-Ping Zang, Jian-Guo Tian, Wen-Yuan Zhou, Feng Song, and Chun-Ping Zhang, "Study on Z-scan characteristics for a large nonlinear phase shift," J. Opt. Soc. Am. B 22, 1911-1916 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-9-1911
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