Key components technology update of the 250W high-power LPP-EUV light source

13.5nm wavelength, CO 2 -Sn-LPP EUV light source which is the most promising solution for the source capable of enabling high-volume-manufacturing of semiconductor devices with critical layers patterned with sub-10nm resolution. Our source incorporates unique and original technologies such as; high power short pulse CO 2 laser, short wavelength solid-state pre-pulse laser, highly stabilized droplet generator, a laser-droplet shooting control system and debris mitigation technology utilizing a strong magnetic field. In this paper we present a technology update on the key components of our 250W CO 2 -Sn-LPP EUV light source.