EUV ILLUMINATION SYSTEM WITH A SYSTEM FOR MEASURING FLUCTUATIONS OF THE LIGHT SOURCE
The invention relates to an EUV (extreme ultraviolet) illumination system with at least one EUV light source (3) ; with an aperture stop and sensor arrangement (1) for the measurement of intensity fluctuations and/or position changes of the EUV light source (3), in particular in the range of the eff...
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