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ICOP & ICPET 2017, 23 - : 557-560 Back to browse issues page
Study on interaction of ultra-short laser pulses with transparent material of fused silica
Somayeh Najafi Dr. * 1, Atoosa Sadat Arabanian Dr., Reza Massudi Prof.Dr, Aliasghar Ajami Dr., Chandra Nathala Dr., Wolfgang Husinsky Prof.Dr
Abstract:   (1039 Views)

In this paper, a comprehensive theoretical model is presented to investigate the whole chain of processes occurring in the interaction of a focused ultrashort laser pulse with fused silica glass. The equations describing the nonlinear propagation of an ultrashort pulse inside transparent material, electron density evolution, heat conduction, and thermo-elasto plastic displacement are respectively solved, and lastly, it is calculated induced refractive index changes inside the material and qualitatively compared with experimental results. The results show that the major induced refractive index changes is negative and located in the center of the profile. In the following, the performed experiments show that increasing the number of incident pulses causes inducing periodic nano-structures in focal region that orientation of the induced birefringence axes depends on the polarization of the incident pulses

Keywords: Induced refractive index changes, Birefringence, Thermo-elasto plastic model, Femtosecond laser micromachining, Induced nano-gratings
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Type of Study: Research | Subject: Special
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najafi S, Arabanian A S, Massudi R, Ajami A, nathala C, husinsky W. Study on interaction of ultra-short laser pulses with transparent material of fused silica. ICOP & ICPET. 2017; 23 :557-560
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Volume 23 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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