title: Frequency-domain streak camera for ultrafast imaging of evolving light-velocity objects.
abstract: We demonstrate a frequency-domain streak camera (FDSC) that captures the picosecond time evolution of luminal-velocity refractive index structures in a single shot. In our prototype FDSC, a probe-reference pulse pair propagates obliquely to a subpicosecond pump pulse that creates an evolving nonlinear index structure in glass, supplementing a conventional frequency-domain holographic probe-reference pair that copropagates with the pump. A single spectrometer acquires data from both pairs via spatial or temporal multiplexing, demonstrating the feasibility of a compact frequency-domain tomographic system in which a single spectrometer processes data from multiple probing angles.
authors.affiliation: Department of Physics, University of Texas at Austin, Austin, Texas 78712, USA.
authors.forename: Z
authors.initials: Z
authors.lastname: Li
authors.forename: R
authors.initials: R
authors.lastname: Zgadzaj
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: S
authors.initials: S
authors.lastname: Reed
authors.forename: P
authors.initials: P
authors.lastname: Dong
authors.forename: M C
authors.initials: MC
authors.lastname: Downer