Patent ID: 7008810

Claim:
A method for fabricating at least one mesa or ridge structure in a layer or layer sequence, in which sidewalls of the mesa or ridge structure are provided with a coating applied after the uncovering thereof, having the following method steps: a) application of a sacrificial layer above the layer or layer sequence; b) application and patterning of a mask layer above the sacrificial layer for definition of the mesa or ridge dimensions; c) partial removal of the sacrificial layer and of the layer or layer sequence, to form the mesa or ridge structure in the layer or layer sequence; d) selective removal of a part of the sacrificial layer from the side areas thereof which have been uncovered in step c), so that a sacrificial layer remains which is narrower in comparison with a layer that has remained above the sacrificial layer as seen from the layer or layer sequence; e) application of the coating at least to the sidewalls of the structure produced in steps a) to d) so that the side areas of the residual sacrificial layer are not completely overformed by the coating material; and f) at least partial removal of the sacrificial layer, so that the layer that has remained above the sacrificial layer as seen from the layer or layer sequence is lifted off.