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The effect of spherical aberration on temperature distribution inside glass by irradiation of a high repetition rate femtosecond pulse laser |
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| Authors: | Dai Ye Yu Guang-Jun Wu Guo-Rui Ma Hong-Liang Yan Xiao-Na and Ma Guo-Hong |
| Institution: | Department of Physics, Shanghai University, Shanghai 200444, China;Department of Physics, Shanghai University, Shanghai 200444, China;Department of Physics, Shanghai University, Shanghai 200444, China;Department of Physics, Shanghai University, Shanghai 200444, China;Department of Physics, Shanghai University, Shanghai 200444, China;Department of Physics, Shanghai University, Shanghai 200444, China |
| Abstract: | In this paper, we study the effect of spherical aberrations on the light intensity and the temperature distribution in the focal region in a 250-kHz femtosecond laser irradiated Ag+-doped borosilicate glass. When a focused beam goes through an interface between air and glass, spherical aberration will result in the separation of the focal point and then cause a clear change of the light intensity distribution along the incident direction. That phenomenon will further influence the longitudinal cross-section temperature distribution in glass. Here we use Ag nanoparticle formation as a marker for establishing temperature distribution and we find that the formation of nanoparticle shows a strong dependence on the temperature field and the detailed precipitation process is also discussed. |
| Keywords: | femtosecond laser glass spherical aberration heat accumulation effect |
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