Piston measurement by quadriwave lateral shearing interferometry.
We present what is to our knowledge a new method for measuring the relative piston between two independent beams separated by a physical gap, typical of petawatt facilities. The feasibility of this measurement, based on quadriwave lateral shearing interferometry, has been demonstrated experimentally: piston has been measured with accuracy and sensitivity better than 50 nm.
Mousset
Soazic
S
Commissariat à l'Energie Atomique, Centre d'Etudes Scientifiques et Techniques d'Aquitaine, Le Barp, France.
Rouyer
Claude
C
Marre
Gabrielle
G
Blanchot
Nathalie
N
Montant
Sébastien
S
Wattellier
Benoit
B