Morales-Vidal, Marta, Ramirez, Manuel G., Sirvent, Daniel, Martínez Guardiola, Francisco Javier, Alvarez, Mariela L., Pascual, Inmaculada
Efficient and stable holographic gratings stored in an environmentally friendly photopolymer
M. Morales-Vidal, M. G. Ramírez, D. Sirvent, F.J. Martínez-Guardiola, M.L. Álvarez, I. Pascual, "Efficient and stable holographic gratings stored in an environmentally friendly photopolymer", Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics; 112072J (2019) https://doi.org/10.1117/12.2530574
URI: http://hdl.handle.net/10045/97290
DOI: 10.1117/12.2530574
ISSN: 0277-786X
ISBN: 9781510631632
Abstract: 
Holographic gratings stored in low-toxicity photopolymer, Biophotopol, have been analyzed to achieve stable and efficient holograms. A curing process allows the hologram stabilization, but at the same time, it could produce a diffraction efficiency (DE) reduction. Here, a detailed low-cost LED curing protocol is shown to stabilize over time 1205 l/mm transmission holograms, and at the same time, a 33% DE increment (with respect non-curing holograms) have been demonstrated. Finally, to obtain a better understanding of DE change, a theoretical fit of our experimental result, based on Kogelnik’s coupled wave theory was carried out and discussed.
Keywords:Holography, Holographic recording materiales, Photopolymers, Low-toxicity photopolymer, LED-curing
SPIE, The International Society for Optics and Photonics
info:eu-repo/semantics/conferenceObject