High-contrast white-light Lau fringes.
We present a new optical assembly with which to achieve Lau fringes with totally incoherent illumination. Gratinglike codification of the spatially incoherent source combined with an achromatic Fresnel diffraction setup allows us to achieve Lau fringe-pattern visibility of almost 100% with broadband light. The white-light character to our proposed setup is in stark contrast to previous monochromatic implementations. Potential implications of this fact are identified.
Lancis
J
J
Departament de Ciències Experimentals, Universitat Jaume I, Castelló 12080, Spain. lancis@exp.uji.es
Mínguez-Vega
G
G
Tajahuerce
E
E
Climent
V
V
Andrés
P
P
Jaroszewicz
Z
Z