title: Ultrafast oscilloscope based on laser-triggered field emitters.
abstract: Laser-triggered electron emission from sharp metal tips has been demonstrated in recent years as a high brightness, ultrafast electron source. Its possible applications range from ultrafast electron microscopy to laser-based particle accelerators to electron interferometry. The ultrafast nature of the emission process allows for the sampling of an instantaneous radio frequency (RF) voltage that has been applied to a field emitter. For proof-of-concept, we use an RF signal derived from our laser's repetition rate, mapping a 9.28 GHz signal in 22.4 fs steps with 28 mv accuracy.
authors: Catherine
authors: C
authors: Kealhofer
authors: Brannon B
authors: BB
authors: Klopfer
authors: Gunnar E
authors: GE
authors: Skulason
authors: Thomas
authors: T
authors: Juffmann
authors: Seth M
authors: SM
authors: Foreman
authors: Mark A
authors: MA
authors: Kasevich