Bifurcation in reflection spectra of holographic diffraction grating recorded on dicromated pullulan
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Volume diffraction gratings were created holographically on a dichromated pullulan (polysaccharide doped with chromium). Specific and very rare multi-peak structure in the reflection spectra is observed. It was found that multiple peaks are consequence of non-ideal structure of volume diffraction grating. Theoretical analysis and numerical simulations confirm that the observed behavior arise from a slight randomness of grating parameters: refractive index, grating period, film thickness. The results of calculation are in agreement with experimental results.
KeywordsHolographic diffraction grating Reflection spectra Bifurcation Polysaccharide
This work was funded by the Ministry of Education, Science and Technological Development of the Republic of Serbia, under Grants Number OI 171038 and III 45016.
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