Velocity measurement by a self-mixing laser diode using speckle correlation

Sahin Kaya Ozdemir, Satoshi Ito, Sotetsu Takamiya, Shigenobu Shinohara, Hirofumi Yoshida, Masao Sumi

Research output: Contribution to conferencePaper

2 Scopus citations

Abstract

We propose a new self-mixing laser diode (SM-LD) speckle velocimeter based on autocorrelation. SM-LD launches and receives reflected light from a moving surface which has a random reflection profile. The speckle signals obtained from SM-LD are processed using autocorrelation. The linear relation between the velocity and the correlation length of the speckle intensity fluctuations allows the determination of the velocity of the target easily. The range of the investigated velocity is 20 mm/s to 450 mm/s.

Original languageEnglish (US)
Pages1756-1760
Number of pages5
StatePublished - Jan 1 1999
EventProceedings of the 1999 16th IEEE Instrumentation and Measurement Technology Conference, IMTC/99 - Measurements for the new Millenium - Venice, Italy
Duration: Jun 24 1999Jun 26 1999

Conference

ConferenceProceedings of the 1999 16th IEEE Instrumentation and Measurement Technology Conference, IMTC/99 - Measurements for the new Millenium
CityVenice, Italy
Period6/24/996/26/99

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Ozdemir, S. K., Ito, S., Takamiya, S., Shinohara, S., Yoshida, H., & Sumi, M. (1999). Velocity measurement by a self-mixing laser diode using speckle correlation. 1756-1760. Paper presented at Proceedings of the 1999 16th IEEE Instrumentation and Measurement Technology Conference, IMTC/99 - Measurements for the new Millenium, Venice, Italy, .