SHEARING INTERFEROMETER USING FOUR GRATINGS

K. Iwata, H. Kikuta, T. Kondo, A. Mizutani

Abstract

This paper describes a shearing interferometer with four diffraction gratings for dividing light waves. It allows us to use an extended white light source. This feature of the interferometer is discussed and demonstrated by experiments. By constructing the interferometer for testing transparent object, phase distribution of the light wave passing through an optical lens is measured with a halogen lamp source. By modifying it for the reflecting object, profile of a curved mirror is measured.

Keywords

shearing interferometer, grating, phase measurement

Download

IMEKO-WC-2000-TC2-P040.pdf

DOI

-

IMEKO TC

TC2 - Photonics

Back to the proceedings