• Physics
  • Published 1990

Double grating interferometer with large lateral shear

@inproceedings{Lin1990DoubleGI,
  title={Double grating interferometer with large lateral shear},
  author={J.-A. Lin and S.-W. Hsu and F. Wu},
  year={1990}
}
A double-grating interferometer capable of determining the spherical aberration of the optics is described. Two Ronchi rulings of 19.69 lines/mm have been used in the setup to generate large shear among the diffracted wavefronts. Three zero-order diffracted wavefronts will then be collected to interfere by means of spatial filtering