  Highly reproducible manufacturing of organic optical crystals with
well-defined geometry and dimension is important to realize industrially
relevant all-organic microelectronic and nanophotonic components, and photonic
integrated circuits. Here, we demonstrate programmed shape and size alteration
of perylene crystal resonators into disk and rectangular geometries using
focused-ion beam milling technique. Due to highly reproducible nature of the
employed technique, the fabricated smaller sized disk and rectangular crystal
resonators displaying shape and size dependent optical modes are suitable for
commercial nanophotonic applications.
