A compact speckle interferometer for measuring low- amplitude low frequency motion

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 6994, Issue , 2008, Pages

  Ryle, James P ^a   Al Kalbani, Mohammed ^b   Gopinathan, Unnikrishnan ^a,c   Boyle, Gerard ^b   Coakley, Davis ^b   Sheridan, John T ^a  

^a UNIVERSITY COLLEGE DUBLIN   (Ireland)

^b ST JAMES S HOSPITAL   (Ireland)

^c UNIVERSITY OF STUTTGART   (Germany)

Author keywords

Inplane displacement; Ocular microtremor; Speckle interferometry; Vibration analysis

Indexed keywords

ARCHITECTURAL DESIGN; COMPUTER NETWORKS; FIBER OPTICS; INTERFEROMETERS; INTERFEROMETRY; MANAGEMENT; MEASUREMENTS; OPTICAL DESIGN; OPTICAL FIBERS; OPTICAL INSTRUMENTS; PHOTONS; POWDERS; SPECKLE;

FREQUENCY RANGING; IN PLANE DISPLACEMENTS; LABORATORY CONDITIONS; LOW FREQUENCY (LF); LOW-FREQUENCY MOTIONS; MEAS URED RESULTS; MECHANICAL VIBRATIONS; MICRO-VIBRATIONS; NONCONTACT (NC); OPTICAL (PET) (OPET); PHOTON MANAGEMENT; SPECKLE INTERFEROMETERS;

VIBRATIONS (MECHANICAL);

EID: 44949197776     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.781852     Document Type: Conference Paper

References (15)

1. J. A. Leendertz, "Interferometric displacement measurements on scattering surfaces utilizing speckle effects," J. Phys.E 3,214-218, (1970).
2. R. Dandliker and J.-F. Willemin, "Measuring microvibrations by heterodyne speckle interferometry," Opt. Lett. 6,165-167,(1981).
3. J.-F. Willemin and R. Dandliker, "Measuring amplitude and phase of microvibrations by heterodyne speckle interferometry," Opt. Lett. 8,102-104, (1983).
4. G. Boyle, D. Coakley, and J.F. Malone, "Interferometry for ocular microtremor measurement," Appl. Opt. 40, 167-175,(2001).
5. D. Coakley, Minute Eye Movement and Brainstem Function, (CRC, Boca Raton, Fla., 1983), ISBN 0849357942.
6. D Coakley and J. G. Thomas, "The ocular microtremor record as a potential procedure for establishing brain death," J. Nuerol. Sci 31, 199-205, (1977).
7. S. Bojanic, T. Simpson and C. Bolger, "Ocular Microtremor: a tool for measuring depth of anaesthesia?," Br. J. Anaesth 86, 519-522, (2001).
8. T. Suzuki, O. Sasaki, K. Higuchi, T. Maruyama, "Real time displacement measurement in sinusoidal phase modulating interferometry," Appl. Opt. 28, 5270-5274, (1989).
9. T. Suzuki, O. Sasaki, S. Takayama and T. Maruyama, "Real time displacement measurement using synchronous detection in a sinusoidal phase modulating interferometer," Opt. Eng. 32,1033-1037, (1993).
10. Abramowitz, M. and LA. Stegun, Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series #55, Dover Publications, 1965, Sections 9.1.1, 9.1.89, and 9.12, formulas 9.1.10 and 9.2.5.
11. J. Dunlop and G. Smith, Telecommunications Engineering, (CRC, 1994), ISBN 0748740449
12. J. Kauffmann and H. J. Tiziani, "Time-resolved vibration measurement with temporal speckle pattern interferometry," Appl. Opt. 45, 6682-6688, (2006).
13. Labview programming environment, http://www.ni.com/labview/
14. Matlab programming language, http://www.mathworks.com/products/matlab/
15. Welch, P.D, "The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms," IEEE Trans. Audio Electroacoustics, 15 70-73, (1967).