Abstract
The study of caustics is important because they contain information about the image formation properties of optical systems. In this work we use the concept of caustic as a set of focal points, and we have developed a second order approach theory to determine local slopes and curvatures of a wavefront emerging from an optical system. The method is based on the use of a point diffraction interferometer, and the analysis of the interferograms allows us to compute the focal region. Experimental results obtained with a plano-convex lens demonstrate the accuracy of the combined theoretical-experimental method here developed. Application to noisy wavefronts such as those produced by biological samples, specifically in crystalline lenses of fish eyes, are also exposed.
Highlights
RicartDepartament de Fısica Aplicada i Optica, Facultat de Fısica, Universidad de Barcelona, 08028 Barcelona, Spain Departament de Fısica Aplicada i Optica, Facultat de Fısica, Universidad de Barcelona, 08028 Barcelona, Spain Departament de Fısica Aplicada i Optica, Facultat de Fısica, Universidad de Barcelona, 08028 Barcelona, Spain
Caustics have been subject of research for many years
In order to demonstrate experimentally the accuracy of both the quadratic approach as well as the interferometer, on one hand we developed the experimental set up shown in figure 4 to determine the caustics position of a beam produced by a plano-convex lens illuminated by an on-axis plane wave
Summary
Departament de Fısica Aplicada i Optica, Facultat de Fısica, Universidad de Barcelona, 08028 Barcelona, Spain Departament de Fısica Aplicada i Optica, Facultat de Fısica, Universidad de Barcelona, 08028 Barcelona, Spain Departament de Fısica Aplicada i Optica, Facultat de Fısica, Universidad de Barcelona, 08028 Barcelona, Spain. The study of caustics is important because they contain information about the image formation properties of optical systems. In this work we use the concept of caustic as a set of focal points, and we have developed a second order approach theory to determine local slopes and curvatures of a wavefront emerging from an optical system. The method is based on the use of a point diffraction interferometer, and the analysis of the interferograms allows us to compute the focal region. Experimental results obtained with a plano-convex lens demonstrate the accuracy of the combined theoretical-experimental method here developed. Application to noisy wavefronts such as those produced by biological samples, in crystalline lenses of fish eyes, are exposed.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the European Optical Society: Rapid Publications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
