Hybrid optics for focusing ultrashort laser pulses.
We present a specially designed hybrid optics comprising refraction and diffraction effects for tight spatial and temporal focusing of ultrashort laser pulses. Both aims can be put into practice by having a high numerical aperture (NA=0.45) and low internal dispersion at the same time. We are presenting what we believe is the first experimental realization of such a hybrid short plus focusing optics. The focusing properties are compared with a commonly used microscope objective (20 X, NA = 0.45) in theory and experimentally.
Fuchs
Ulrike
U
Fraunhofer-Institut für Angewandte Optik und Feinmechanik, Jena, Germany. ulrike.fuchs@iof.fraunhofer.de
Zeitner
Uwe D
UD
Tünnermann
Andreas
A