An apparatus and method is disclosed which may comprise a laser produced
plasma EUV system which may comprise a drive laser producing a drive
laser beam; a drive laser beam first path having a first axis; a drive
laser redirecting mechanism transferring the drive laser beam from the
first path to a second path, the second path having a second axis; an EUV
collector optical element having a centrally located aperture; and a
focusing mirror in the second path and positioned within the aperture and
focusing the drive laser beam onto a plasma initiation site located along
the second axis. The apparatus and method may comprise the drive laser
beam is produced by a drive laser having a wavelength such that focusing
on an EUV target droplet of less than about 100 .mu.m at an effective
plasma producing energy if not practical in the constraints of the
geometries involved utilizing a focusing lens. The drive laser may
comprise a CO.sub.2 laser. The drive laser redirecting mechanism may
comprise a mirror.