Method of manufacturing surface textured high-efficiency radiating devices and devices obtained therefrom
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United States of America Patent
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Jan 7, 2003
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N/A
app pub date -
Jul 26, 1999
filing date -
Jul 28, 1998
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Abstract
A device for emitting radiation at a predetermined wavelength is presented. This device has a cavity with an active layer in which said radiation is generated by charge carrier recombination. The edges of the device define the region or space for radiation and/or charge carrier confinement. At least one of the edges of this cavity has a substantially random grating structure. The edge of the device has substantially random grating structure and can extend as at least one edge of a waveguide forming part of this radiation emitting device. The radiation emitting device of the present invention can have a cavity comprising a radiation confinement space that includes confinement features for the charge carriers confining the charge carriers to a subspace being smaller than the radiation confinement space within the cavity. The emitting device can comprise at least two edges forming, in cross-section, a substantially triangular shape. The angle between these two edges is smaller than 45.degree.. At least one of the two edges has a transparent portion. the devices according to the present invention can be arranged in arrays.
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