Мақола

Dynamic modulation of spatially structured polarization fields for real-time control of ultrafast laser-material interactions

Y. JinLaser Group, School of Engineering, University of Liverpool, L69 3GQ, UK#N#Olivier AllegreLaser Group, School of Engineering, University of Liverpool, L69 3GQ, UK#N#Walter PerrieLaser Group, School of Engineering, University of Liverpool, L69 3GQ, UK#N#Kerry J. AbramsNanoinvestigation Centre at Liverpool, University of Liverpool, L69 3GQ, UKJinglei OuyangLaser Group, School of Engineering, University of Liverpool, L69 3GQ, UK#N#Eamonn FearonLaser Group, School of Engineering, University of Liverpool, L69 3GQ, UK#N#Stuart EdwardsonLaser Group, School of Engineering, University of Liverpool, L69 3GQ, UK#N#Geoff DeardenLaser Group, School of Engineering, University of Liverpool, L69 3GQ, UK#N#

2013en

ABI

Аннотация

The polarization state of an ultrafast laser is dynamically controlled using two Spatial Light Modulators and additional waveplates. Consequently, four states of polarization, linear horizontal and vertical, radial and azimuthal, all with a ring intensity distribution, were dynamically switched at a frequency ν = 12.5 Hz while synchronized with a motion control system. This technique, demonstrated here for the first time, 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. Laser ablation of Induced Periodic Surface Structures is used to directly verify the state of polarization at the focal plane.

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Идентификаторлар

DOI: 10.1364/oe.21.025333

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