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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 450-453 |
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Goodarzi R, Hajesmailbaigi F, Bostandoost E, Motamedi A, Razzaghi H. Investigation of the geometry of spontaneous structures after interaction with ultra-short laser pulses. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :450-453
URL: http://opsi.ir/article-1-2578-en.html
URL: http://opsi.ir/article-1-2578-en.html
Reza Goodarzi *1 
, Fereshteh Hajesmailbaigi1 , Eftekhar Bostandoost1 , Asma Motamedi1 , Hossein Razzaghi
, Fereshteh Hajesmailbaigi1 , Eftekhar Bostandoost1 , Asma Motamedi1 , Hossein Razzaghi
1- Atomic Energy Organization of Iran
Abstract: (1011 Views)
In this research, the geometry of spontaneous structures formed on the surface of the silicon wafer after interaction with femtosecond laser pulses has been investigated. At the energy flux near the ablation threshold, the structure formed is in accordance with the Gaussian profile of the laser and is circular; As the energy and number of pulses increase, spontaneous structures form on the surface that does not initially have a regular shape. As the energy increases and the number of pulses increases, the spontaneous structures gradually take on triangular and quadrilateral geometric shapes. Finally, it is shown that by increasing the energy transferred to the surface (either through the number of pulses or by increasing the energy flux of the beams), the geometry of the structures changes from a circular initial form to a regular hexagon that has high stability.
Type of Study: Experimental |
Subject:
Special
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