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US 12,763,744 B2Granted
RF control of acousto-optic deflector
OwnerJohn Bopp, John Lekavich +2inventors
InventorsJohn Bopp, John Lekavich, Bao Tran, Khanh Le
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Abstract
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.
Claims20
A radio frequency (RF) system, comprising:
- a Variable Gain Amplifier (VGA) configured to control the overall gain of the RF power;
- an amplifier providing a fixed gain to a pre-amp stage;
- a multi-stage amplification system including a large signal driver stage and a final stage delivering the RF power signal;
- bi-directional couplers positioned between the final amplifier stage and the RF power output, enabling the sampling of forward and reverse power;
- RF power detectors converting sampled power into a DC voltage equivalent for feedback and control purposes;
- and
- a controller managing gain, bias currents, and shutdown based on feedback from the RF power detectors
- an acousto-optics device with:
- 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.
10 more elements
A method to deflect a laser beam, comprising:
- applying the laser beam to an optical element having one or more steps each with a predetermined height and one or more crystals or transducers on the 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;
- impedance matching the electrical input of the transducers to a 50-ohm load;
- providing an electrical input to deflect the laser at the two or more frequencies;
- and
- generating a sound field in the optical element to deflect a laser beam based on two or more frequencies;
- controlling the crystals or transducers with a controller, a Variable Gain Amplifier (VGA) configured to control the overall gain of the RF power, an amplifier providing a fixed gain to a pre-amp stage, a multi-stage amplification system including a large signal driver stage and a final stage delivering the RF power signal, a bi-directional couplers positioned between the final amplifier stage and the RF power output, enabling the sampling of forward and reverse power, RF power detectors converting sampled power into a DC voltage equivalent for feedback and control purposes, wherein the controller manages gain, bias currents, and shutdown based on feedback from the RF power detectors.
6 more elements
Dependencies are inferred from the claim text.