A process for making an optical transducer that includes depositing a lower molecular weight first layer and a higher molecular weight second layer. E-beam radiation is applied to the first and second layers which are developed to form an aperture. The aperture includes a resist protrusion in the second layer. The resist protrusion protrudes outward beyond the first layer. Metal is evaporated through the aperture to form the optical transducer. The resist protrusion defines a shape of a concave metal transducer corner.