Article comprising an organic laser
AssigneeLucent Technologies Inc.
InventorsMagnus Berggren, Ananth Dodabalapur, Richart Elliott Slusher
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Abstract
An organic laser according to the invention comprises an electrically pumped source of incoherent radiation with organic active region, and further comprises a waveguide structure that receives the incoherent radiation. The core of the waveguide comprises organic material that absorbs the incoherent radiation and emits coherent radiation of longer wavelength. The laser forms a unitary structure, with the source of incoherent radiation being close to the waveguide core, exemplarily less than 10.lambda. from the core, where .lambda. is the laser wavelength. Exemplarily the laser is embodied in a planar waveguide laser, in a microdisk laser, or in a laser comprising a photonic bandgap structure.
Claims13
Article comprising a unitary solid state source of electromagnetic radiation, said source comprising a layer structure that comprises a multiplicity of layers, including two spaced apart conductor layers with light-emissive first organic material therebetween, and further comprising contacts for causing an electrical current to flow between said conductor layers, such that incoherent electromagnetic radiation of a first wavelength is emitted from said light-emissive first organic material;
- CHARACTERIZED IN THAT
- a) the layer structure further comprises an optical waveguide comprising a first and a second cladding region with a core region therebetween, with the optical waveguide disposed such that at least some of said incoherent electromagnetic radiation of the first wavelength is received by the optical waveguide;
- b) said core region comprises a layer of second organic material selected to absorb said incoherent electromagnetic radiation of the first wavelength, and to emit coherent electromagnetic radiation of a second wavelength, longer than the first wavelength, in response to said absorbed incoherent electromagnetic radiation.
Dependencies are inferred from the claim text.