Abstract: An acoustic microscope system is described that includes a container for holding a medium with an object to be measured. Compressional waves are generated by a probe into the medium. The compressional waves travel along an acoustic axis to interact with the object. Shear waves are generated by a shear wave source into the medium. The shear waves travel along a secondary axis which intersects with the acoustic axis at the object with a non-zero angle. The shear waves are configured to cause shear wave oscillations directed transverse to the secondary axis and at least partially directed along the acoustic axis. A measurement of the object is determined based on the compressional waves having interacted with the object as a function of the generation of the shear waves.

Abstract: The photonic integrated device comprises a substrate, a plurality of mechanical resonator structures on a surface of the substrate, exposed to receive sound waves from outside the device; a plurality of sensing optical waveguides, each sensing optical waveguide at least partly mechanically coupled to at least one of the mechanical resonator structures, or a sensing optical waveguide that is at least partly mechanically coupled to all of the mechanical resonator structures; an input optical waveguide on the surface of the substrate, coupled to the plurality of sensing optical waveguides or the single sensing optical waveguide, for supplying light to the plurality of sensing optical waveguides or the single sensing optical waveguide; at least one output optical waveguide on the surface of the substrate, coupled to the plurality of sensing optical waveguides or the single sensing optical waveguide, for collecting light from the plurality of sensing optical waveguides or the single sensing optical waveguide that

Abstract: The photonic integrated device for converting a light signal into sound comprises-a substrate having a substrate surface, an optical waveguide on the substrate surface, a photo-acoustic conversion body, comprising at least one volume of fractionally light absorbing material or formed entirely of fractionally light absorbing material, wherein a width of the photo-acoustic conversion body is greater than a width of the optical waveguide and means for enhancing distribution of light from the optical waveguide over the photo-acoustic conversion body.

Abstract: The photo-acoustic conversion based sound emitter device has a sound output surface for transmitting sound wave vibrations to a medium outside the device. An optical waveguide, is used to transmit light through an optical path within the device. First and second photo-acoustic conversion volumes, at different distances from the sound output surface, are used for transmitting sound generated in the first and second volume to the medium via the sound output surface, the optical path extending directly or indirectly successively through the first and second photo-acoustic conversion volume.

Abstract: The sound detection device comprises a substrate, an array of sound detectors in or on a surface of the substrate, a processing circuit coupled to the sound detectors, the processing circuit being configured to sum signals from the sound detectors with relative time delays or phase shifts that compensate for propagation delay of sound along the array in a sound propagation mode that is bound to said surface. In an embodiment the sound in said sound propagation mode is bound to the surface using an acoustic waveguide, wherein the surface of the substrate forms a part of the acoustic waveguide, the sound detection device comprising a wall facing the array of sound detectors, with a space between the surface of the substrate and the wall, the sound detection device comprising an opening that provides incoming sound from outside the device access to said space, for excitation of the wave in the bound propagation mode in the acoustic waveguide by sound from outside the device.

Abstract: The invention relates to an absolute position measuring device, comprising an optical fiber, an optical strain sensor in optical communication with the optical fiber, and a volume of material deforming under influence of a magnetic field. The optical strain sensor is arranged for sensing deformation of the volume of material. Further, the device is arranged for multi-dimensional position measurement.

Abstract: The invention relates to an absolute position measuring device, comprising an optical fiber, an optical strain sensor in optical communication with the optical fiber, and a volume of material deforming under influence of a magnetic field. The optical strain sensor is arranged for sensing deformation of the volume of material. Further, the device is arranged for multi-dimensional position measurement.