A device has a resonator coupled to input and output nodes, the resonator being characterized by a transducer to drive the output node, and further characterized by a feedthrough capacitance such that portions of the input signal bypass the transducer to allow a spurious signal to reach the output node. The light is extracted in a direction from the light emitting layer toward the first conductive type layer. The urging force is applied by a resilient member, such as a spring washer.