Wang, J.-K.J.-K.WangChiu, T.-L.T.-L.ChiuChi, C.-H.C.-H.ChiCHI-KUANG SUN2018-09-102018-09-10199907403224http://www.scopus.com/inward/record.url?eid=2-s2.0-0033239883&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/350018https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033239883&doi=10.1364%2fJOSAB.16.000651&partnerID=40&md5=58fa69e5b610977265804a055fe8407cA generalized model is formulated to explain analytically the transient behavior observed in linearly chirped femotesecond laser pulses. which incorporates the linear chirp parameter. The model is validated by measurements using chirped femtosecond laser pulses on fused silica. Based on this model, an extension to the two-beam coupling method is proposed which not only measures the nonlinear intensity index of refraction and the two-photon absorption coefficient by use of chirped laser pulses, but monitors the chirp as well.Fused silica; Light absorption; Light refraction; Nonlinear optics; Optical glass; Optical variables measurement; Pulsed laser applications; Refractive index; Semiconducting glass; Ultrafast phenomena; Chirp; Femtosecond laser pulses; Laser pulsesjournal article2-s2.0-0033239883