The invention relates to a method for scanning along a continuous scanning trajectory with a scanner system (100) comprising a first pair of acousto-optic deflectors (10) for deflecting a focal spot of an electromagnetic beam generated by a consecutive lens system (200) defining an optical axis (z) in an x-z plane, and a second pair of acousto-optic deflectors (20) for deflecting the focal spot in a y-z plane being substantially perpendicular to the x-z plane, characterized by changing the acoustic frequency sweeps with time continuously in the deflectors (12, 12) of the first pair of deflectors (10) and in the deflectors (22, 22) of the second pair of deflectors (20) so as to cause the focal spot to move continuously along the scanning trajectory.

A system and method for a Surface Acoustic Wave (SAW) spatial light modulator module, or SAW device that provides varying acoustic wave speed are disclosed. The SAW device includes a substrate of a material such as lithium niobate, and a coating layer is applied to the substrate. A SAW transducer of the device is configured to produce SAW signals that propagate with a propagation velocity around an interface between the substrate and the coating layer. The SAW signals couple light signals of a light source into modulated light signals that are emitted from the bottom face and/or edge face of the substrate. In embodiments, a frequency of RF drive signals applied to the SAW transducer in conjunction with the propagation velocity of the SAW signals produces a decrease in a SAW wavelength of the SAW signals as compared to current SAW device systems and methods.

Provided is an acousto-optic device including an elastic medium; a meta structure formed on a first surface of the elastic medium, and an elastic-wave generating unit which generates an elastic wave in the elastic medium. The meta structure includes a first layer and a second layer that is formed on the first layer. The at least one of the first layer and the second layer includes a predetermined repetitive pattern.

A device can determine a distance to an object. The device can use the determined distance to vary a focal length of a first adjustable element so that the first adjustable element directs light from the object into a first waveguide and onto a detector, and forms an image of the object at the detector. The device can produce an image, such as augmented content, on a panel. The device can direct light from the panel into a second waveguide. The device can use the determined distance to vary a focal length of a second adjustable element so that the second adjustable element directs light out of the second waveguide and forms a virtual image of the panel in a plane coincident with the object. The device can operate as an augmented reality headset. The adjustable elements can be phase modulators, or acoustically responsive material with surface acoustic wave transducers.

An acousto-optic deflector includes an optical element having a surface with one or more steps formed thereon; a conductive layer formed on the surface with the steps; one or more crystals secured to each step; and electrodes positioned on each surface of each crystal.

A telecom system is disclosed with a laser controlled by an acousto-optic deflector including an optical element having a surface with one or more steps formed thereon; a conductive layer formed on the surface with the steps; one or more crystals secured to each step; and electrodes positioned on each surface of each crystal.

A laser system may include a laser source configured to generate a first laser light beam, a beam stabilizer downstream from the laser source and configured to stabilize the first laser light beam, and a beamsplitter downstream from the beam stabilizer and configured to split the stabilized first laser light beam into a plurality of second laser light beams. The system may further include a multi-channel acousto-optic modulator (ACM) including a common acousto-optic medium configured to receive the plurality of second laser light beams, and a respective phase array transducer comprising a plurality of electrodes coupled to the common acousto-optic medium for each of the second laser light beams. The system may further include a plurality of radio frequency (RF) drivers each configured to generate respective RF drive signals for the phased array transducer electrodes.

The invention relates to an acousto-optic deflector comprising a bulk of acousto-optic medium and acoustic wave generator coupled to the bulk, characterized by that the acoustic wave generator comprises at least two different electro-acoustic transducers for generating acoustic waves in the bulk.

A laser system may include a laser source configured to generate a laser light beam, a beam stabilizer downstream from the laser light source, and an acousto-optic modulator (AOM). The AOM may include an acousto-optic medium configured to receive the laser light beam, and a phased array transducer including a plurality of electrodes coupled to the acousto-optic medium and configured to cause the acousto-optic medium to output a zero order laser light beam and a first order diffracted laser light beam. The system may further include a photodetector configured to receive a sampled laser light beam split from the zero order beam and generate a feedback signal associated therewith, and an RF driver configured to generate an RF drive signal to the phased array transducer electrodes so that noise is diverted to the first order diffracted laser light beam based upon the feedback signal.

The subject of the invention relates to an acousto-optic deflector with a layered structure (10), the essence of which is it comprises at least two acousto-optic crystals (12), to each of which at least one electro-acoustic transducer (14) is connected, and the adjacent crystals (12) are separated by an acoustic isolator (16). The subject of the invention also relates to a method for deflecting an optical beam using an acousto-optic deflector (10), characterised by that the acousto-optic deflector (10) comprises at least two acousto-optic crystals (12, 12), among which a first acoustic wave (15) is created in a first acousto-optic crystal (12) using a first electro-acoustic transducer (14) connected to the first acousto-optic crystal (12), and a second acoustic wave (15) is created in a second acousto-optic crystal (12) using a second electro-acoustic transducer (14) connected to the second acousto-optic crystal (12) and arranged between the first acousto-optic crystal (12) and the second crystal (12).