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.
© 2012 Optical Society of America
Original Manuscript: October 31, 2011
Revised Manuscript: January 13, 2012
Manuscript Accepted: January 19, 2012
Published: March 22, 2012
Martin Bock, Susanta Kumar Das, Carsten Fischer, Michael Diehl, Peter Börner, and Ruediger Grunwald, "Reconfigurable wavefront sensor for ultrashort pulses," Opt. Lett. 37, 1154-1156 (2012)