Open AccessExperimental investigation of laser beam diffraction on phase step and its practical applications
Author(s) -
Basisty E.V.,
Komotskii V.A.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.3769
Subject(s) - optics , diffraction , beam (structure) , laser , laser beam quality , angular spectrum method , laser beams , phase (matter) , radiation , basis (linear algebra) , m squared , materials science , beam diameter , physics , mathematics , geometry , quantum mechanics
The change in shape of the spatial spectrum, which is a result of the interaction of a focused laser beam with a phase step structure (PSS), is investigated. As a laser beam passes through a PSS, a spatial spectrum of radiation in the form of two peaks with a deep gap in between is generated. The change in the peaks’ structure as the PSS moves relative to the optical axis of the laser beam is studied in detail. On the basis of the experimental results, a new scheme for measuring small linear and angular deviations is proposed.