Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9785579 | Optics Communications | 2005 | 12 Pages |
Abstract
In this work, we show when a coherent beam of light diffracts from a 1D phase step of specified height, phase singularity appears in the diffracted field. By changing the height of the step, singularities for different frequencies or wavelengths are formed which modify the spectrum of the incident beam differently. We have calculated the modifying factor and simulated the modified spectral profiles for different singularities at points in the neighborhoods of the singularities for two different sources used in the experimental studies. In the latter studies, using a monochromator, we have specified the spectral profiles at points in the neighborhoods of the singularities. The simulation and experimental results are in very good agreement. Further development of the work and its potential applications are also discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
M.T. Tavassoly, M. Amiri, E. Karimi, H.R. Khalesifard,