Examples provide a compact, dynamic non-uniformity correction mechanism and counter-countermeasure mechanism. In one example an optical imaging system includes an imaging sensor configured to receive optical radiation and to produce an image of a viewed scene from the optical radiation, an optical train including at least one optical component configured to receive the optical radiation from the viewed scene and to focus the optical radiation to the imaging sensor, and an acousto-optic modulator positioned in the optical train and having an ON state and an OFF state, the acousto-optic modulator being configured in the OFF state to pass the optical radiation, and the acousto-optic modulator being configured in the ON state to diffract the optical radiation and blur the image produced by the imaging sensor from the diffracted optical radiation.

Examples provide a compact, dynamic non-uniformity correction mechanism and counter-countermeasure mechanism. In one example an optical imaging system includes an imaging sensor configured to receive optical radiation and to produce an image of a viewed scene from the optical radiation, an optical train including at least one optical component configured to receive the optical radiation from the viewed scene and to focus the optical radiation to the imaging sensor, and an acousto-optic modulator positioned in the optical train and having an ON state and an OFF state, the acousto-optic modulator being configured in the OFF state to pass the optical radiation, and the acousto-optic modulator being configured in the ON state to diffract the optical radiation and blur the image produced by the imaging sensor from the diffracted optical radiation.

In various embodiments, a beam-parameter adjustment system and focusing system alters a spatial power distribution of a radiation beams before the beam is coupled into an optical fiber or delivered to a workpiece.

An optical system for producing pulsed laser output includes a laser cavity containing an active medium for generating laser radiation; and an acousto-optic modulator (AOM) positioned in the laser cavity for modulating the laser radiation acting as a Q-switch.

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.

Provided are an acousto-optic element, an acousto-optic element array, and a display apparatus including the acousto-optic element array. The acousto-optic element includes: an acousto-optic modulator which includes an acousto-optic layer formed of an acousto-optic material; a light supplier which supplies light to the acousto-optic modulator in a first direction; a first sound-wave modulator which applies first elastic waves to the acousto-optic modulator in a second direction; and a second sound-wave modulator which applies second elastic waves to the acousto-optic modulator in a third direction. The light supplied from the light supplier to the acousto-optic modulator is deflected by diffraction caused by the first elastic waves applied from the first sound-wave modulator and diffraction caused by the second elastic waves applied from the second sound-wave modulator, and is output from the acousto-optic modulator through a front side of the acousto-optic modulator.

A laser apparatus includes laser, a beam splitter, a phased array acousto-optic deflector (AOD) with one or more transducers, a damper, a galvano deflection unit, and a condensing lens to generate one or more laser beams directed at the electronic circuit. The Galvano deflection unit works with 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.

In various embodiments, a beam-parameter adjustment system and focusing system alters a spatial power distribution of a radiation beams before the beam is coupled into an optical fiber or delivered to a workpiece.

Acousto-optical modulators, such as a SAW modulators, with telescope arrays and superimposed volume gratings for light field generation are disclosed. These devices can employ pixelated demagnification and have layers of output optics, such as reflective gratings and/or arrays of transmissive refractive or diffractive lenses that manipulate the light emitted by the SAW modulator. In other cases, superimposed volume gratings are used, in which pixilation occurs in angle space.

A system and method for light field generation is disclosed. A proposed holographic display system encodes views of a scene into surface acoustic waves (SAW signals) that propagate along waveguides of SAW modulators and/or optical signals propagating in the waveguides. Each view provides a different perspective of the scene when the views are projected as light fields out of the SAW modulators and are viewed at different locations by an observer. In some examples, the system encodes the brightness information for each view into the light signals.