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Titolo:
A speckle velocimeter using a semiconductor laser with external optical feedback from a moving surface: effects of system parameters on the reproducibility and accuracy of measurements
Autore:
Ozdemir, SK; Takamiya, S; Shinohara, S; Yoshida, H;
Indirizzi:
Shizuoka Univ, Hamamatsu, Shizuoka 4328561, Japan Shizuoka Univ HamamatsuShizuoka Japan 4328561 u, Shizuoka 4328561, Japan
Titolo Testata:
MEASUREMENT SCIENCE & TECHNOLOGY
fascicolo: 10, volume: 11, anno: 2000,
pagine: 1447 - 1455
SICI:
0957-0233(200010)11:10<1447:ASVUAS>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIODE; RANGE;
Keywords:
self-mixing laser diode; speckle velocimeter; optical feedback; optical sensor;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Ozdemir, SK Shizuoka Univ, Hamamatsu, Shizuoka 4328561, Japan Shizuoka Univ Hamamatsu Shizuoka Japan 4328561 4328561, Japan
Citazione:
S.K. Ozdemir et al., "A speckle velocimeter using a semiconductor laser with external optical feedback from a moving surface: effects of system parameters on the reproducibility and accuracy of measurements", MEAS SCI T, 11(10), 2000, pp. 1447-1455

Abstract

A speckle velocimeter exploiting the effects of external optical feedback in a semiconductor laser is analysed. The laser diode is used both as the light source and as the detector making the system self-detecting and self-aligning with a single optical axis. The velocimeter employs an autocorrelation method to analyse the detected self-mixing speckle signal. The linear relation between the velocity and the reciprocal of the autocorrelation timeof fluctuations in the amplitude of the speckle signal allows the determination of the velocity. Effects of various parameters of the measurement system are analysed and the dependences of the reproducibility and accuracy ofthe measurements on these parameters are discussed in order to achieve optimization of the system. The optimized system has a measurement error of less than 1.4% within the range of calibration velocities and less than 2.7% outside this range.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/08/20 alle ore 08:24:13