Abstract
The polarization state of an ultrafast laser has been dynamically controlled using two Spatial Light Modulators and additional waveplates. Consequently, a number of states of polarization, linear horizontal and vertical, radial and azimuthal were dynamically switched while synchronized with a motion control system. This technique enables a remarkable level of real-time control of the properties of light waves and applied to real-time surface patterning, shows that highly controlled nanostructuring is possible. This unique surface structuring is used here to demonstrate a novel direct security marking technique for high value metal components.
Original language | English |
---|---|
Pages (from-to) | 363-368 |
Number of pages | 6 |
Journal | Procedia Engineering |
Volume | 183 |
Early online date | 28 Apr 2017 |
DOIs | |
Publication status | Published - 2017 |
Keywords
- Ultrafast lasers
- Security Marking
- spatial light modulator
- Laser material processing