Umm-i-Kalsoom 1, 2, 3, †, , Bashir Shazia 2, Ali Nisar 1, 2, 4, Shahid Rafique M 5, Husinsky Wolfgang 1, Nathala Chandra S R 1, Makarov Sergey V 6, Begum Narjis 7
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(a) Magnified view of nano-LIPSS formation of Fig.3(a). (b) Two-dimensional fast Fourier transform (FFT) spectra of Fig.3(a), and (c) variation in periodicity of nano-LIPSS for various local fluences using FFT after ablation of Ti in O2by 100 pulses of fsec laser at wavelength of 800 nm, pulse duration of 30 fsec and repetition rate of 1 kHz |