发明授权
US08767181B2 Microlithographic exposure method as well as a projection exposure system for carrying out the method 有权
微光刻曝光方法以及用于实施该方法的投影曝光系统

Microlithographic exposure method as well as a projection exposure system for carrying out the method
摘要:
In an exposure method for exposing a substrate which is arranged in the area of an image plane of a projection objective as well as in a projection exposure system for performing that method, output radiation directed at the substrate and having an output polarization state is produced. Through variable adjustment of the output polarization state with the aid of at least one polarization manipulation device, the output polarization state can be formed to approach a nominal output polarization state. The polarization manipulation can be performed in a control loop on the basis of polarization-optical measuring data.
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