Invention Grant
- Patent Title: Interleaved acousto-optical device scanning for suppression of optical crosstalk
- Patent Title (中): 用于抑制光学串扰的交错声光器件扫描
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Application No.: US13844576Application Date: 2013-03-15
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Publication No.: US09395340B2Publication Date: 2016-07-19
- Inventor: Jamie Sullivan , Wenjian Cai , Yevgeniy Churin , Ralph Johnson , Meier Yitzhak Brender , Mark Shi Wang , Rex Runyon , Kai Cao
- Applicant: KLA-Tencor Corporation
- Applicant Address: US CA Milpitas
- Assignee: KLA-Tencor Corporation
- Current Assignee: KLA-Tencor Corporation
- Current Assignee Address: US CA Milpitas
- Agency: Bever, Hoffman and Harms, LLP
- Main IPC: G01N21/88
- IPC: G01N21/88 ; G01N21/95 ; G01N29/24 ; G01N21/956

Abstract:
A method of scanning a sample includes simultaneously forming a plurality of co-linear scans. Each scan is formed by a sweep of a spot by an acousto-optical device (AOD). The co-linear scans are separated by a predetermined spacing. A first plurality of swaths are formed by repeating the simultaneous forming of the plurality of co-linear scans in a direction perpendicular to the co-linear scans. The first plurality of swaths have an inter-swath spacing that is the same as the predetermined spacing. A second plurality of swaths can be formed adjacent to the first plurality of swaths. Forming the second plurality of swaths can be performed in an opposite direction to that of the first plurality of swaths or in a same direction. An inspection system can implement this method by including a diffractive optical element (DOE) path after a magnification changer.
Public/Granted literature
- US20140260640A1 Interleaved Acousto-Optical Device Scanning For Suppression Of Optical Crosstalk Public/Granted day:2014-09-18
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