Publication detail
COMPARISON OF THE 2-DIMENSIONAL FRAUNHOFER AND THE 2-DIMENSIONAL FRESNEL APPROXIMATIONS IN THE ANALYSIS OF SURFACE-ROUGHNESS BY ANGLE SPECKLE CORRELATION .1. THEORY
OHLÍDAL, M.
English title
COMPARISON OF THE 2-DIMENSIONAL FRAUNHOFER AND THE 2-DIMENSIONAL FRESNEL APPROXIMATIONS IN THE ANALYSIS OF SURFACE-ROUGHNESS BY ANGLE SPECKLE CORRELATION .1. THEORY
Type
Peer-reviewed article not indexed in WoS or Scopus
Language
en
Original abstract
In this paper we discuss some new theoretical results which we reached in the analysis of a random surface roughness in the framework of the two-dimensional (2D) Fresnel approximation. A comparison with 2D Fraunhofer approximation results is made. It is shown for experimentally reasonable values of the geometrical arrangement parameters of the method that the surface roughness measurement can be interpreted in the 2D Fraunhofer approximation only for surfaces with high slopes of surface irregularities. Surfaces with small slopes of irregularities require interpretation of the surface roughness measurement in the 2D Fresnel approximation. In this case, not only the standard deviation of surface height fluctuations but also the correlation length of the surface can be determined.
Keywords in English
Laser speckle, surface roughness
Released
1991-11-01
Publisher
TAYLOR & FRANCIS LTD
Location
London
ISSN
0950-0340
Volume
42
Number
10
Pages from–to
2115–2135
Pages count
20
BIBTEX
@article{BUT38426,
author="Miloslav {Ohlídal}",
title="COMPARISON OF THE 2-DIMENSIONAL FRAUNHOFER AND THE 2-DIMENSIONAL FRESNEL APPROXIMATIONS IN THE ANALYSIS OF SURFACE-ROUGHNESS BY ANGLE SPECKLE CORRELATION .1. THEORY",
journal="JOURNAL OF MODERN OPTICS",
year="1991",
volume="42",
number="10",
pages="2115--2135",
issn="0950-0340"
}