Fluorescent Photopolymer for Holographic Patterning

Abstract

Photopolymer films were prepared for holographic recording and fabrication of multi-dimensional holographic fluorescent patterns. The photopolymer consists of a methacrylate epoxy monomer, photoinitiator, sensitizer, binder polymer, and polyanthracene (PAnt) as a fluorophore. The high diffraction efficiency of fluorescent photopolymer film was determined through a holographic recording system as 60% for a film of 85 µm in thickness. The optimized photopolymer film was applied to fabricate 2 dimensional patterns by laser interference lithography technique and rotation method. A 2-dimensional pattern was confirmed from a fluorescent microscope, which showed crossed pattern having a line width of 0.7 μm.

Keywords:

• dual polymerization
• fluorescence
• holographic lithography
• holographic recording
• patterning
• photopolymer

Acknowledgments

We acknowledge the financial support of Ministry of Commerce, Industry and Energy of Korea (MOCIE), and the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government(MOST) (No. R11-2007-050-01001-0).