Z-scan technique for investigation of the noninstantaneous optical Kerr nonlinearity
Optics Letters, Vol. 34, Issue 18, pp. 2769-2771 (2009)
http://dx.doi.org/10.1364/OL.34.002769
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Abstract
By treating laser-induced optical Kerr nonlinearity as a noninstantaneous decaying process, we present the pulse-duration-dependent Z-scan analytical expressions for an arbitrary aperture and an arbitrary nonlinear magnitude. This theory has the capacity to characterize the third-order nonlinear refraction induced by a laser pulse with its temporal duration being much longer than or comparable to the recovery time of the nonlinear effect. Through Z-scan measurements at different pulse durations, the nonlinear refractive coefficient and the recovery time could be determined unambiguously and simultaneously. Furthermore, the theory can be utilized to confirm whether the measured optical Kerr nonlinearity is instantaneous or noninstantaneous with respect to the given pulse duration.
© 2009 Optical Society of America
OCIS Codes
(190.3270) Nonlinear optics : Kerr effect
(320.7100) Ultrafast optics : Ultrafast measurements
(320.7110) Ultrafast optics : Ultrafast nonlinear optics
ToC Category:
Ultrafast Optics
History
Original Manuscript: May 8, 2009
Revised Manuscript: July 28, 2009
Manuscript Accepted: August 17, 2009
Published: September 9, 2009
Citation
Bing Gu, Hui-Tian Wang, and Wei Ji, "Z-scan technique for investigation of the noninstantaneous optical Kerr nonlinearity," Opt. Lett. 34, 2769-2771 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-18-2769
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