Ripple formation during deep hole drilling in copper with ultrashort laser pulses |
| |
| Authors: | A Weck THR Crawford DS Wilkinson HK Haugen JS Preston |
| |
| Institution: | (1) Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario, L8S 4L7, Canada;(2) Department of Engineering Physics, McMaster University, Hamilton, Ontario, L8S 4L7, Canada;(3) Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4L7, Canada |
| |
| Abstract: | Cross sections of deep holes produced by ultrashort laser pulses and showing a variety of microstructural formations are presented.
After tens of thousands of 800 nm wavelength pulses, the walls of the holes show distinct ripples with a period of ∼300 nm.
It is demonstrated that these ripples are the result of light interference effects. Indeed, the ripples are perpendicular
to the electric field of the laser beam and their spacing scales with the laser wavelength. Additional fine ripples with spacing
of ∼75 nm were also observed.
PACS 62.20.Mk; 62.25.+g; 79.20.Ds |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
