Spatial and temporal coherence characterization of a smoothed laser beam.
The measurement of the coherence characteristics of the speckles generated by an optically smoothed laser source is investigated. We present a new method that can be used for every kind of smoothing technique. A modified Mach-Zehnder interferometer allows us to measure both the lifetime and the spatial transverse size of the hot spots generated by a broadband and transverse multimode source. Experimental results agree well with theoretical predictions.
Surville
J
J
Commissariat à l'Energie Atomique, Centre d'Etudes Scientifiques et Techniques d'Aquitaine, Le Barp, France.
Videau
L
L
Montant
S
S
Stenz
C
C
Sauteret
C
C