Patent ID: 9055657
Filing Date: 2015-06-09
Classification: G21K,H05G

Abstract:
1. An extreme ultraviolet light generation apparatus, comprising: a droplet production device configured to produce a droplet of a target substance in a predetermined traveling direction; a first laser device configured to generate a first laser beam and irradiate the droplet with the first laser beam to diffuse the droplet; a second laser device configured to generate a second laser beam and irradiate the target substance diffused by irradiation of the first laser beam with the second laser beam to produce plasma of the diffused target substance and generate extreme ultraviolet light from the plasma of the target substance; a beam shaping unit configured to elongate a beam spot of the first laser beam in the traveling direction of the droplet produced by the droplet production device; and a polarization adjustment mechanism configured to adjust polarization of the first laser beam emitted from the first laser device, wherein the polarization of the first laser beam adjusted by the polarization adjustment mechanism is linear polarization and a polarization direction of the linear polarization is generally parallel to the traveling direction of the droplet.