Micromanufacturing of Geometrically and Dimensionally Precise Molecular Single‐Crystal Photonic Microresonators via Focused Ion Beam Milling

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, programmed shape and size alteration of square‐shaped perylene crystal resonators into circular disk and rectangular geometries is demonstrated using the focused‐ion‐beam milling technique. The fabricated smaller sized circular disk and rectangular crystal resonators display shape‐ and size‐dependent optical modes. Due to generality and high reproducibility, this processing technique can be also extended to other organic crystals to create optical components suitable for commercial nanophotonic device applications. Here, predetermined micromilling of square‐shaped perylene crystal resonators into circular disk and rectangular geometries are demonstrated using the focused‐ion‐beam technique. The fabricated crystal resonators display shape‐ and size‐dependent optical modes. The generality and high reproducibility of this processing technique can be also extended to other organic crystals.