Janardhana, K.Ravindrachary, V.Kumar, P.C.R.YogishaPoojary, B.Manjunatha, K.B.Ismayil2020-03-302020-03-302011AIP Conference Proceedings, 2011, Vol.1349, PART A, pp.1319-1320https://idr.nitk.ac.in/handle/123456789/6805A new pyrazoline derivative 3-phenyl-5-(4-N,N-dimethylaminophenyl)-1H-2- pyrazoline (PDHP) was synthesized using standard method. The structure of the compound was established based on 1H NMR spectrum. The third-order optical nonlinear properties of PDHP compound were measured using nanosecond Z-scan method The measured nonlinear absorption coefficient ? is 0.27�10-10m W-1. The magnitude of third order susceptibility is Re?(3)==19.94�10-13 esu and Im?x (3)=5.85�10-13 esu. These experimental results reveal that the PDHP may be a good candidate for optical limiting applications due to its reverse saturated absorption phenomenon. � 2011 American Institute of Physics.Book chapter