Thin Films of Block Copolymers as Planar Optical Waveguides


  • The authors are grateful for financial support by the Deutsche Forschungsgemeinschaft (DFG) in the frame of priority program, Schwerpunktprogramm 1165 (SPP 1165: KN 224/15–1). J. K. Kim acknowledges the support of the Creative Research Initiative Program by the Korea Science and Engineering Foundation (KOSEF).


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Thin films of diblock copolymers with cylindrical microdomains oriented normal to the film plane are employed as planar optical waveguides in the Kretschmann configuration (see Figure). Their waveguiding properties were investigated by optical waveguide spectroscopy. The dielectric constants and the film thickness of the block copolymer layer can be independently obtained from fitting between the waveguide patterns for s- and p-polarization and Fresnel calculations.