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    IMTEK student wins „Best student paper award“ awarded at ISOT 2012

    15.11.2012 18:56
    Michael Pauls, master's student at the chair for microactuators wins the „Best student paper award“ at the ISOT 2012 in paris with the paper „A reflective tunable blazed-grating for high energy femtosecond laser pulses“.

    This paper is a collaboration between resarchers of the Laboratory for Microactuators at the Department of Microsystems Engineering at the University of Freiburg and the Max Born Institute for nonlinear Optics and Short Pulse Spectroscopy in Berlin. The Authors -- Michael Pauls, Jens Brunne, Rüdiger Grunwald and Ulrike Wallrabe -- present a tunable reflective blazed-grating for the use with high energy femtosecond laser pulses. The technology is based on the surface deformation of a viscoelastic polymer induced by the volume shrinkage of the polymer during crosslinking. The blaze-angle of the grating is tunable by thermal actuation. Thermal actuation and light propagation have been characterized.

    (The image shows: White light interferometric measurement of the central region (1mmx1.2mm) of a circular blazed-grating at 27°C. The element diameter is 4 mm, the gating constant is 50 µm and the average amplitude is 300 nm; contact person: Michael Pauls) >> more



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