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Patent
Electro Scientific Industries Inc. | Date: 2014-03-13

A method for reducing thermal effects in laser ablation optical emission spectrometry includes creating discrete ablation spots along an analysis line on a target surface. At least one of the following is also carried out. First, the ablation spots are positioned so that a pair of successive ablation spots are spaced apart from one another along the analysis line and are separated from one another by another ablation spot. Second, when the analysis line comprises generally parallel, adjacent analysis line segments, the ablation spots are positioned so that (A) a pair of successive ablation spots are on different analysis line segments, and (B) the successive ablation spots are positioned to be at different longitudinal positions along the analysis line segments when the different analysis line segments are adjacent to one another. As a result, a linear scan of isolated ablation spots can be generated.


Patent
Electro Scientific Industries Inc. | Date: 2014-03-14

Laser systems and methods improve the processing velocity of the routs or other features to avoid exceeding the laser systems dynamic limits. A laser processing system divides laser processing commands corresponding to a plurality of features to be processed on or in the workpiece into process segments. Laser processing parameters and beam trajectories are simulated to determine a maximum processing velocity for each of the process segments. The laser processing system selects one or more of the maximum processing velocities for processing the plurality of features on or within the workpiece. A slowest processing velocity of the maximum processing velocities may be used to process each of the plurality of features. Alternatively, each continuous rout sequence may be processed using a different processing velocity. In other embodiments, each process segment is processed using its corresponding maximum processing velocity.


Patent
Electro Scientific Industries Inc. | Date: 2014-03-11

The angle of incidence () and azimuth () of a beam axis (32) can be moved relative to a workpiece (22) to provide desirable taper characteristics to a side wall (124) of a resulting kerf (120) produced by a focused laser beam (30) propagated along the beam axis (32).


Patent
Electro Scientific Industries Inc. | Date: 2014-03-14

Laser systems and methods insert a settling time before and after each tooling action. A peak AOD excursion generally occurs at the transition in velocity between inter-feature moves and tooling moves. This transition occurs both before tooling (on the approach to the tooling location) and after tooling (on the departure from the completed tooling location to the next location). By adding a settling delay on each end of the tooling period, the AOD excursion is allowed to settle to a lower value. This then allows higher inter-tooling velocities (for high throughput) while keeping the AOD travel excursion within the bounds of the systems AOD configuration.


Patent
Electro Scientific Industries Inc. | Date: 2014-08-15

Laser output (

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