The holographic properties of dichromated gelatin (DCG) sensitized with various xanthene dyes were studied, and results are reported. The sensitivity of dyed DCG in the green part of the spectrum compared with that of pure DCG (215 mJ/cm2) was significantly improved by addition of Rhodamine 6G (140 mJ/cm2) or Erythrosin B (90 mJ/cm2). Diffraction gratings were recorded with a He–Ne laser at 543.5 nm. The maximum diffraction efficiency was found to be 32% at normal incidence of the readout beam; it was 80% at the Bragg angle.
© 2001 Optical Society of America
Original Manuscript: October 26, 2000
Revised Manuscript: February 26, 2001
Published: June 10, 2001
Dejan Pantelić and Branka Murić, "Improving the holographic sensitivity of dichromated gelatin in the blue–green part of the spectrum by sensitization with xanthene dyes," Appl. Opt. 40, 2871-2875 (2001)