P.Kumbhakar1,M.Chattopadhyay1,R.Sarkar1,and U.Chatterjee2 1Nanoscience Laboratory,Department of Physics,National Institute of Technology,Durgapur,713209,India 2Laser Laboratory,Burdwan University,Burdwan,713104,India
Abstract:
Two-photon absorption(2PA) in zinc sulphide(ZnS) and Mn2+-doped ZnS quantum dots is reported by the z-scan technique,with nanosecond pulsed laser radiation at 355 nm.The observed values of the 2PA cross section of all the samples are 105 times larger than that of bulk ZnS.