Reconfigurable wavefront sensor for ultrashort pulses
Martin Böck, Susanta Kumar Das, Carsten Fischer, Michael Diehl, Peter Börner, R. Grünwald
Abstract
Martin Böck, Susanta Kumar Das, Carsten Fischer, Michael Diehl, Peter Börner, R. Grünwald
Abstract
A highly flexible Shack-Hartmann wavefront sensor for ultrashort pulse diagnostics is presented. The temporal system performance is studied in detail. Reflective operation is enabled by programming tilt-tolerant microaxicons into a liquid-crystal-on-silicon spatial light modulator. Nearly undistorted pulse transfer is obtained by generating nondiffracting needle beams as subbeams. Reproducible wavefront analysis and spatially resolved second-order autocorrelation are demonstrated at incident angles up to 50° and pulse durations down to 6 fs.
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A highly flexible Shack-Hartmann wavefront sensor for ultrashort pulse diagnostics is presented. The temporal system performance is studied in detail. Reflective operation is enabled by programming tilt-tolerant microaxicons into a liquid-crystal-on-silicon spatial light modulator. Nearly undistorted pulse transfer is obtained by generating nondiffracting needle beams as subbeams. Reproducible wavefront analysis and spatially resolved second-order autocorrelation are demonstrated at incident angles up to 50° and pulse durations down to 6 fs.
Key concepts: Optics, Wavefront, Wavefront sensor, Ultrashort pulse, Spatial light modulator, Tilt (camera), Femtosecond pulse shaping, Physics