Pyrromethene-HEMA-based photopolymerizable holographic recording material

• Published in: Optics communications Vol. 228; no. 1; pp. 55 - 61
• Main Authors: Blaya, S., Acebal, P., Carretero, L., Fimia, A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-12-2003; Elsevier Science
• Subjects: Diffraction efficiency, resolution, and other hologram characteristics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Holographic optical elements; holographic gratings; Holographic recording materials; optical storage media; Holography; Optical materials; Optics; Photopolymer; Physics; Polymers and organics; Pyrromethene; Holography; Pyrromethene; Photopolymer; 42.70.J; 42.70.L; 61.41; Hydroxyethyl methacrylate polymer; Diffraction efficiency; Organic dye; PMMA; Photopolymerization; Diffraction gratings; Recording material; Optical materials; Experimental study; Holographic gratings
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2003.09.068

A simple photopolymerizable dry polymeric film based on pyrromethene dye (PM567) which it has been usually used in solid-state dye lasers, has been developed. This new composition is based on only three components: poly-(methylmethacrylate) (PMMA) as a binder, 2-hydroxyethylmethacrylate (HEMA) as a monomer and 1,3,5,7,8-pentamethyl-2,6-diethylpyrromethene-difluoroborate (PM567) as photoinitiator. Diffraction efficiencies near 60% are obtained with exposures of ≈1 J/cm
2 in materials of 500 μm of thickness. We have studied the holographic properties of the material when the concentration of monomer and intensity are changed, obtaining good results at low intensities, which it implies that this material can be used in applications based on low power lasers.