Patent ID: 7608846
Filing Date: 2009-10-27
Classification: H05G

Abstract:
1. An extreme ultra violet light source device for generating extreme ultra violet light by irradiating a target material with a laser beam emitted from a laser light source to turn the target material into a plasma state, said device comprising: a first chamber; a second chamber connected to said first chamber through an opening portion; a target supplier that supplies a target material into said first chamber; droplet generating means provided in said first chamber, said droplet generating means generating droplets of the target material of molten metal such that the droplets repetitively drop based on the target material supplied by said target supplier; blocking means that prevents the droplets of the target material generated by said droplet generating means from passing through said opening portion; control means that controls said blocking means to operate at predetermined timing; a laser light source that generates a laser beam; and an optical system that leads the laser beam generated by said laser light source to the droplets of the target material generated in said first chamber and introduced into said second chamber through said opening portion.