2015/12/04 by Е. А. Тихонов, E. A. Tikhonov, Tikhonov, E. A. +2
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Optics (physics.optics) #Photonic and Optical Devices #Photorefractive and Nonlinear Optics #physics.optics
paper · pdf · doi:10.48550/arxiv.1512.01539
16 pages, 7 figures
arxiv created 2015/12/04 · openalex publication_date 2015/12/04 · arxiv updated 2015/12/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Measurement and analysis of diffraction parameters of thick transmission holographic phase gratings recorded on PHC-488 photopolymer are presented. Precision determination of the spatial grating period is executed by Bragg angle measurement for two precisely known wavelengths in the first diffraction order and also by Bragg angle measurement on one wavelength in the first and second diffraction orders. Determination of actual grating thickness and depths of spatial modulation of a holographic recording, which are responsible for their main optical characteristics, is carried out with the application of H. Kogelnik 2-wave coupled model. Calculated and experimental Bragg angles in two orthogonal orientated planes of linear polarized laser light were used to confirm theoretical model with experimental results. Extreme values of the diffraction parameters, efficiency and spectral resolution, important for holographic phase grating applications are analyzed.