Scanning efficiency by individual beam steering of multi-beam apparatus

Systems and methods of observing a sample in a multi-beam apparatus are disclosed. A multi-beam apparatus may comprise an array of deflectors configured to steer individual beamlets of multiple beamlets, each deflector of the array of deflectors having a corresponding driver configured to receive a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: Van Der Toorn, Jan-Gerard Cornelis
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Systems and methods of observing a sample in a multi-beam apparatus are disclosed. A multi-beam apparatus may comprise an array of deflectors configured to steer individual beamlets of multiple beamlets, each deflector of the array of deflectors having a corresponding driver configured to receive a signal for steering a corresponding individual beamlet. The apparatus may further include a controller having circuitry to acquire profile data of a sample and to control each deflector by providing the signal to the corresponding driver based on the acquired profile data, and a steering circuitry comprising the corresponding driver configured to generate a driving signal, a corresponding compensator configured to receive the driving signal and a set of driving signals from other adjacent drivers associated with adjacent deflectors and to generate a compensation signal to compensate a corresponding deflector based on the driving signal and the set of driving signals.