With Spatial Light Modulators (SLMs) and Deformable Mirros (DMs), it is now possible to shape the polarization, phase and amplitude pixel by pixel. By shaping the fields in the pupil of a lens, all kinds of focused spots can be obtained. These spots can be optimized for material processing, confocal imaging and for optimised sensing depending on the object that is to be sensed.
Focused spots with extremely long focal depth (e.g. sheet illumination for microscopy) or to exert maximum forces on an object in a specific direction (e.g. medical treatment.) Focused spot optimized to give maximum sensitivity to detect a certain feature (e.g. for medical imaging).