title: On-shot focal-spot characterization technique using phase retrieval.
abstract: We present an on-shot focal-spot characterization technique based on a phase-retrieval scheme that retrieves near-field phase from multiplane focal-spot measurements in an experimental target chamber. The technique is easy to implement inside a target chamber and is demonstrated in a multiterawatt laser system. It is also found that phase retrieval can quantitatively detect residual angular dispersion coming from the pulse compressor misalignment.
authors.affiliation: Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299, USA. sbah@lle.rochester.edu
authors.forename: Seung-Whan
authors.initials: SW
authors.lastname: Bahk
authors.forename: Jake
authors.initials: J
authors.lastname: Bromage
authors.forename: Ildar A
authors.initials: IA
authors.lastname: Begishev
authors.forename: Chad
authors.initials: C
authors.lastname: Mileham
authors.forename: Christian
authors.initials: C
authors.lastname: Stoeckl
authors.forename: Michael
authors.initials: M
authors.lastname: Storm
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Zuegel