The Stochastic Impact of Defocus in EUV Lithography

The Stochastic Impact of Defocus in EUV Lithography
by Fred Chen on 06-28-2020 at 6:00 am

The Stochastic Impact of Defocus in EUV Lithography

The stochastic nature of imaging has received a great deal of attention in the area of EUV lithography. The density of EUV photons reaching the wafer is low enough [1] that the natural variation in the number of photons arriving at a given location can give rise to a relatively large standard deviation.

In recent studies [2,3], it … Read More