A micro-machined ultrasonic transducer substrate that reduces or eliminates the lateral propagation of acoustic energy includes holes, commonly referred to as vias, formed in the substrate and proximate to a MUT element. In accordance with the present invention, the system may be formulated into microspheres, nanoparticles, or films. A series of birefringent waveplates provide a polarization-dependent optical transmission function such that the polarized beam is decomposed into a first beam component carrying the first spectral band at a first polarization and a second beam component carrying the second spectral band at a second, orthogonal polarization. Directional corrections are generated for the munition to direct the munition towards the target based on amplitude variations in the received signals. The light source is positioned between the first clamping part and the back casing, and the back side of the light source is contacted with the inner side face of the second clamping part. Insulating materials of the insulating layers fill a gap between the chip and the support plate.