Classic Ronchi test and its variants for quality control of various optical surfaces
Journal Title: Semiconductor Physics, Quantum Electronics and Optoelectronics - Year 2016, Vol 19, Issue 3
Abstract
Performed in this work is the analysis of the optical Ronchi interferometer circuit and its upgrading to test quality of various optical surfaces. Briefly described in this paper is the classic test by Ronchi, shown is every upgraded circuit diagram of the interferometer and their principle of operation. Also, it is demonstrated interferential patterns for each method allowing one to determine which aberrations are present in the tested optics. With this method, when one can only visually detect aberrations, it seems to be not accurate. But with digital image processing the interferential pattern, special mathematical models and algorithms, aberrations that are present in the optical surface can be calculated with very high accuracy. Therefore, the methods of control offered in this paper provide fast and accurate results for the data circuits to be simply assembled and configured.
Authors and Affiliations
A. S. Malenko, V. N. Borovytsky
The role of magnetic component of a strong light field in electrostrictive effect
Electrostriction forces during laser ablation have been studied both theoretically and experimentally. The components of electroctrostriction force for inhomogeneous electromagnetic field near a substrate were proposed t...
Effective lifetime of minority carriers in black silicon nano-textured by cones and pyramids
We calculated the dependence of effective lifetime of minority carriers in black silicon nano-textured by cones and pyramids on the diameter of the cone base, the side of the pyramid base, the height of cone and pyramid....
Physical mechanisms and models of the long-term transformations in radiative recombination observed in n-GaAs under microwave irradiation
Simulation of long-term changes in photoluminescence of n-GaAs after microwave treatment by using the analysis of random events underlying the processes of evolution of the defect structure has been performed. We have sh...
ZnTe-based UV sensors
A р-ZnTe/n-CdSe heterojunction was used for making polycrystalline ZnTe-based UV sensors. The heteropair components have the same crystal structure and close lattice parameters. ZnTe and CdSe were grown using thermal eva...
Inversion of spin levels in exchange-coupled pairs under combined time reversal
The method for transforming antiferromagnetic exchange interaction into the ferromagnetic one has been proposed for binuclear coordination compounds, which contain dimers consisting of iron or rare earth ions with arbitr...