Determination of the angle of rotation of the diffraction grating by the method of conical diffraction

Abstract

Diffractograms of rotated polyaniline fiber grating were studied experimentally. Based on the obtained results, the diffraction patterns were analyzed and set of experimental data obtained after image digitization was approximated by the least squares method. The angle of rotation of the diffraction grating was calculated using the determined coefficients of the second-order curves.

Keywords

• conical diffraction
• diffraction grating
• optical system
• laser