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US 11,444,426 B2Granted
Methods for producing a laser pulse and devices for producing a driver control signal
AssigneeTrumpf Laser GmbH
InventorsRainer Flaig, Oliver Rapp, Aleksander Budnicki, Florian Jansen, Daniel Glunk
Life of this patent
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Abstract
In methods and devices for generating a laser pulse of an excitation laser that is actuated by a driver in response to a triggering time of a trigger signal, the driver actuation signal is generated taking into account the time interval between the triggering time and a preceding triggering time.
Claims15
A method for producing laser pulses of an excitation laser, the method comprising:
- receiving an actuation signal or a laser pulse,
- producing a driver control signal for a driver taking into account a time interval of an actuation time of the actuation signal or the laser pulse with respect to an actuation time of a previously received actuation signal or a previous laser pulse, and
- controlling the excitation laser by the driver based on the driver control signal,
- wherein producing the driver control signal comprises compensating for a pulse shape corresponding to the actuation signal or the laser pulse with a compensation signal, and wherein the compensation signal is set in a time-delayed manner with respect to the actuation time of the actuation signal or the laser pulse, is determined based on the time interval, and comprises a declining signal shape during the time interval, such that the pulse shape corresponding to a greater time interval is compensated with a corresponding lower value of the compensation signal, or the pulse shape corresponding to a smaller time interval is compensated with a corresponding higher value of the compensation signal.
1 more element
A device for producing driver control signals for controlling a driver that controls an excitation laser, the device comprising:
- an actuation signal input configured to receive an actuation signal or a laser pulse,
- a driver signal output coupled to the driver,
- a compensation signal establishment means configured to provide a compensation signal,
- a pulse shape store connected to the actuation signal input and at least indirectly to the compensation signal establishment means and configured to provide a pulse shape corresponding to the actuation signal or the laser pulse, and
- a scaling device to which the pulse shape and the compensation signal are supplied and that is configured for generation of a driver control signal at the driver signal output by compensating the pulse shape with the compensation signal, wherein the compensation signal is determined based on a time interval of an actuation time of the actuation signal or the laser pulse with respect to an actuation time of a previously received actuation signal or a previous laser pulse, is set in a time-delayed manner with respect to the actuation time of the actuation signal or the laser pulse, and comprises a declining signal shape during the time interval, such that the pulse shape corresponding to a greater time interval is compensated with a corresponding lower value of the compensation signal, or the pulse shape corresponding to a smaller time interval is compensated with a corresponding higher value of the compensation signal.
2 more elements
A laser system comprising:
- a laser that has an excitation laser,
- a driver that controls the excitation laser, and
- a device for producing a driver control signal connected to the driver, the device comprising:
- an actuation signal input configured to receive an actuation signal or a laser pulse,
- a driver signal output coupled to the driver,
- a compensation signal establishment means configured to provide a compensation signal,
- a pulse shape store connected to the actuation signal input and at least indirectly to the compensation signal establishment means and configured to provide a pulse shape corresponding to the actuation signal or the laser pulse, and
- a scaling device to which the pulse shape and the compensation signal are supplied and that is configured for generation a driver control signal at the driver signal output by compensating the pulse shape with the compensation signal, wherein the compensation signal is determined based on a time interval of an actuation time of the actuation signal or the laser pulse with respect to an actuation time of a previously received actuation signal or a previous laser pulse, is set in a time-delayed manner with respect to the actuation time of the actuation signal or the laser pulse, and comprises a declining signal shape during the time interval, such that the pulse shape corresponding to a greater time interval is compensated with a corresponding lower value of the compensation signal, or the pulse shape corresponding to a smaller time interval is compensated with a corresponding higher value of the compensation signal.
5 more elements
Dependencies are inferred from the claim text.