The invention is a light emitting diode that exhibits high reflectivity to
incident light and high extraction efficiency for internally generated
light. The light emitting diode includes a reflecting layer that reflects
both the incident light and the internally generated light. A multi-layer
semiconductor structure is deposited on the reflecting layer. The
multi-layer semiconductor structure has an active layer that emits the
internally generated light. An array of light extracting elements extends
at least part way through the multi-layer semiconductor structure and
improves the extraction efficiency for internally generated light. The
light extracting elements can be an array of trenches, an array of holes,
an array of ridges or an array of etched strips. The light emitting diode
improves the efficiency of light recycling illumination systems.