Multicolor photonic crystal laser array
| DWPI Title: Surface-emitting photonic crystal laser used for lighting and displays, has laser nanowire structure in which gain of its active region is sufficiently inhomogeneously broadened to emit at lasing wavelength within spectral bandwidth |
| Abstract: A multicolor photonic crystal laser array comprises pixels of monolithically grown gain sections each with a different emission center wavelength. As an example, two-dimensional surface-emitting photonic crystal lasers comprising broad gain-bandwidth III-nitride multiple quantum well axial heterostructures were fabricated using a novel top-down nanowire fabrication method. Single-mode lasing was obtained in the blue-violet spectral region with 60 nm of tuning (or 16% of the nominal center wavelength) that was determined purely by the photonic crystal geometry. This approach can be extended to cover the entire visible spectrum. |
| Use: Surface-emitting photonic crystal laser used for lighting and displays. |
| Advantage: Enables efficient interaction with the gain regions while the larger out-of-plane wave vector directs the lasing emission to occur preferentially in normal direction. |
| Novelty: The surface-emitting photonic crystal laser has two-dimensional photonic crystal having periodic vertically emitting laser nanowire (18) structure. The gain of the active region of the laser nanowire structure is sufficiently inhomogeneously broadened to emit at a lasing wavelength within a spectral bandwidth determined by the lattice structure, lattice constant, and nanowire diameter and height of two-dimensional photonic crystal. The group III-nitride heterostructure includes gallium nitride, aluminum nitride, indium nitride, indium gallium nitride and aluminum indium nitride. |
| Filed: 2/3/2014 |
| Application Number: US14171231A |
| Tech ID: SD 12558.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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