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Emission characteristics of two-dimensional organic photonic crystal lasers fabricated by replica molding

1999; American Institute of Physics; Volume: 86; Issue: 7 Linguagem: Inglês

10.1063/1.371248

1520-8850

M. Meier, Ananth Dodabalapur, John A. Rogers, R. E. Slusher, Attila Mekis, Allen G. Timko, C. A. Murray, R. Ruel, O. Nalamasu,

Nanofabrication and Lithography Techniques

We report on the far-field emission characteristics of two-dimensional photonic crystal-based organic waveguide lasers. The photonic crystals possess square vein, triangular, and honeycomb symmetries. The two-dimensional gratings are fabricated by employing soft lithographic methods. The far-field pattern that we observe is a result of out-of-plane diffractive coupling of the laser emission generated in the plane of the waveguide. This emission pattern offers a convenient and powerful way to evaluate the nature of laser action in such resonators. In devices which possess defects/breaks in the periodicity of the two-dimensional grating, laser emission generated in-plane is scattered in the plane of the waveguide. This phenomenon is the photonic crystal analogue of Kikuchi scattering in electronic crystals.