Spectral broadening error caused by the specularly reflected beams from channel wall in laser doppler velocimetry

Eiji Okada, Yoshitaka Nakajyo, Yutaka Fukuoka, Hitoshi Yauchi, Haruyuki Minamitani

Research output: Contribution to journalArticle

Abstract

Theoretical and experimental investigations were carried out in respect to the influence of spurious spectra caused by specular reflection in laser Doppler velocimetry. In the measurement of the flow in a thin channel, the multiply reflected beams from channel walls work as incident beams to moving scatterers. The resultant scattered light, whose frequency is shifted by the Doppler effect, causes spurious spectra. The spurious spectra by specular reflection cause the spectral broadening and increase the ambiguity of the Doppler frequency, and its influence cannot be ignored when the receiving optical system is arranged in the backscattering region.

Original languageEnglish
Pages (from-to)1209-1214
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume29
Issue number6
Publication statusPublished - 1990 Jun

Fingerprint

Velocity measurement
specular reflection
Lasers
Doppler effect
Backscattering
Optical systems
lasers
causes
ambiguity
backscattering
scattering

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Spectral broadening error caused by the specularly reflected beams from channel wall in laser doppler velocimetry. / Okada, Eiji; Nakajyo, Yoshitaka; Fukuoka, Yutaka; Yauchi, Hitoshi; Minamitani, Haruyuki.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 29, No. 6, 06.1990, p. 1209-1214.

Research output: Contribution to journalArticle

@article{f42fead80ba8451b8fce1d2dd2e44975,
title = "Spectral broadening error caused by the specularly reflected beams from channel wall in laser doppler velocimetry",
abstract = "Theoretical and experimental investigations were carried out in respect to the influence of spurious spectra caused by specular reflection in laser Doppler velocimetry. In the measurement of the flow in a thin channel, the multiply reflected beams from channel walls work as incident beams to moving scatterers. The resultant scattered light, whose frequency is shifted by the Doppler effect, causes spurious spectra. The spurious spectra by specular reflection cause the spectral broadening and increase the ambiguity of the Doppler frequency, and its influence cannot be ignored when the receiving optical system is arranged in the backscattering region.",
author = "Eiji Okada and Yoshitaka Nakajyo and Yutaka Fukuoka and Hitoshi Yauchi and Haruyuki Minamitani",
year = "1990",
month = "6",
language = "English",
volume = "29",
pages = "1209--1214",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "6",

}

TY - JOUR

T1 - Spectral broadening error caused by the specularly reflected beams from channel wall in laser doppler velocimetry

AU - Okada, Eiji

AU - Nakajyo, Yoshitaka

AU - Fukuoka, Yutaka

AU - Yauchi, Hitoshi

AU - Minamitani, Haruyuki

PY - 1990/6

Y1 - 1990/6

N2 - Theoretical and experimental investigations were carried out in respect to the influence of spurious spectra caused by specular reflection in laser Doppler velocimetry. In the measurement of the flow in a thin channel, the multiply reflected beams from channel walls work as incident beams to moving scatterers. The resultant scattered light, whose frequency is shifted by the Doppler effect, causes spurious spectra. The spurious spectra by specular reflection cause the spectral broadening and increase the ambiguity of the Doppler frequency, and its influence cannot be ignored when the receiving optical system is arranged in the backscattering region.

AB - Theoretical and experimental investigations were carried out in respect to the influence of spurious spectra caused by specular reflection in laser Doppler velocimetry. In the measurement of the flow in a thin channel, the multiply reflected beams from channel walls work as incident beams to moving scatterers. The resultant scattered light, whose frequency is shifted by the Doppler effect, causes spurious spectra. The spurious spectra by specular reflection cause the spectral broadening and increase the ambiguity of the Doppler frequency, and its influence cannot be ignored when the receiving optical system is arranged in the backscattering region.

UR - http://www.scopus.com/inward/record.url?scp=0025447285&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025447285&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0025447285

VL - 29

SP - 1209

EP - 1214

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 6

ER -