title: Ultrafast direct imaging using a single high harmonic burst.
abstract: We have demonstrated ultrafast direct soft x-ray microscopy imaging. Microscopy images were acquired using an objective zone plate and a single strong high harmonic burst generated from He in a two-color laser field. This zone-plate-based microscopy system delivered real-space images directly without any data processing. The spatial resolution of the microscope was estimated to be about 140 nm from the image of nanoscale grating patterns.
authors.affiliation: Department of Physics, KAIST, Daejeon 305-701, South Korea.
authors.forename: Kyoung Hwan
authors.initials: KH
authors.lastname: Lee
authors.forename: Seung Beom
authors.initials: SB
authors.lastname: Park
authors.forename: Himanshu
authors.initials: H
authors.lastname: Singhal
authors.forename: Chang Hee
authors.initials: CH
authors.lastname: Nam