SERB School


Optical Metrology

Department of Physics, Tezpur University, Tezpur

June 01-21, 2016

Laboratory Contents

Some of the experiments from the following list will be performed to provide hands-on experience to the participants-

  1. To measure the focal length of a positive lens with (i) magnification method, and (ii) Bessel’s method.
  2. To measure the numerical aperture and magnification of a microscope objective.
  3. To test the flatness of a flat surface by Newton’s ring method.
  4. To measure the radius of curvature of a convex surface with Newton’s ring method .
  5. To measure the radius of curvature of the surface of a plano-convex lens with modified Newton’s rings method.
  6. To measure the wavelength of light with a Michelson interferometer.
  7. To measure the wavelength of light with Young’s double slit experiment.
  8. To measure the refractive index of a coverglass using Young’s double slit experiment.
  9. To measure the (i) diameter of a pinhole, (ii) diameter of a thin wire, and (iii) thickness of a paper sheet using diffraction of light.
  10. To find the resolving power of a (i) lens, (ii) a grating.
  11. To examine a plastic sheet under plane polariscope.
  12. Aligning a laser beam through a narrow glass tube with two plane mirrors.
  13. Aligning a spatial filter for obtaining an expanded laser beam.
  14. Collimating an expanded laser beam using a wedge plate shearing interferometer.
  15. To demonstrate digital holography.
  16. To measure refractive index of metallic films with plasmonics.
  17. To measure physical variables using fiber optics and Bragg gratings.
  18. To simulate a speckle pattern and then create the correlation fringes.
  19. To measure the absorption coefficient of (i) coloured sheet, (ii) coloured liquid, and (iii) liquid with particulate matter.
  20. To study formation of moiré fringes.
  21. To measure fiber loss due to (i) axial shift, (ii) lateral shift, and (iii) angular misalignment between two fibers.
  22. To measure angle of a wedge using (i) Fizeau fringes, (ii) Haidinger fringes.
  23. To measure the beam profile of a continuous wave laser and find its divergence.
  24. To study the Talbot phenomenon and then use it to measure focal length of a positive lens.
  25. Magneto-optics experiment.
  26. Spectral absorption measurement with spectrophotometer.
  27. Photo-diode and photo-transistor characteristics.
  28. To measure beam displacement either with a quadrant or a position sensor.
  29. Schlieren photography.

schematic of a fiber optic gyroscope


Hilger-Chance refractometer prism