Using waveguide scattering of laser radiation for determining the autocorrelation function of statistical surface roughness within a wide range of changes of the roughness correlation interval

Journal Article · Tue Apr 30 00:00:00 EDT 2002 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2002V032N04ABEH002198· OSTI ID:21450515

Egorov, Alexander A ^[1]

---

1. Peoples Friendship University of Russia, Moscow (Russian Federation)

An electrodynamic problem of laser radiation scattering in an integrated-optical waveguide containing small statistical irregularities (interface roughness and irregularities of the refractive indices of the waveguide-forming media) is considered. The possibility of using the waveguide scattering of laser radiation for extracting the information on the statistical properties of irregularities from noisy data of the scattering diagram in a far-field zone is shown. An algorithm for reconstructing the autocorrelation function of irregularities for the correlation interval changing within a wide range is described. The possibility of restoring a given Gaussian autocorrelation function that describes statistical irregularities of the waveguide substrate surface for a correlation interval changing between 10 nm and 10 {mu}m and a high-level additive white real noise is shown by computer simulation. (laser applications and other topics in quantum electronics)

• OSTI ID: 21450515
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 32, Issue 4; Other Information: DOI: 10.1070/QE2002v032n04ABEH002198; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPUTERIZED SIMULATION
CORRELATION FUNCTIONS
DIAGRAMS
LASER RADIATION
NOISE
REFRACTIVE INDEX
ROUGHNESS
SCATTERING
SUBSTRATES
SURFACES
WAVEGUIDES
ELECTROMAGNETIC RADIATION
FUNCTIONS
INFORMATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SIMULATION
SURFACE PROPERTIES