Patent ID: 8344339

Claim:
A source-collector module for an extreme ultraviolet (EUV) lithography system, comprising: a laser that generates a pulsed laser beam; a fold mirror arranged along a source-collector module axis and configured to receive the pulsed laser beam and reflect the pulsed laser beam down the source-collector module axis in a first direction; a Sn rod system having a Sn rod with a Sn surface and configured to rotate the Sn surface past an irradiation location where the Sn surface is irradiated by the pulsed laser beam, thereby creating a laser-produced plasma (LPP) that generates EUV radiation in a second direction that is generally opposite the first direction; and a grazing-incidence collector (GIC) mirror having an input end and an output end and arranged to receive the EUV radiation at the input end and focus the received EUV radiation at an intermediate focus adjacent the output end.