title: Determination of refractive indices of biconvex lenses by use of a Michelson interferometer.
abstract: Measurements of lens parameters such as focal length, radius of curvature, and refractive index are important. We describe a measurement method that utilizes a Michelson interferometer to determine parameters of thin, convex lenses. The real fringe system formed by a Michelson interferometer is used to determine the focal lengths and the radii of curvature of the lenses. The refractive index of the lens material is determined from the thin-lens formula. We were able to determine the refractive indices to an accuracy as great as 99.97%. A detailed theoretical and experimental analysis is given.
authors.affiliation: Photonics Laboratory, Department of Applied Physics, Faculty of Technology and Engineering, Maharaja Sayajirao University of Baroda, Vadodara, India.
authors.forename: Vani K
authors.initials: VK
authors.lastname: Chhaniwal
authors.forename: Arun
authors.initials: A
authors.lastname: Anand
authors.forename: C S
authors.initials: CS
authors.lastname: Narayanamurthy