title: Efficient generation of THz pulses with 0.4 mJ energy.
abstract: Efficient generation of THz pulses with high energy was demonstrated by optical rectification of 785-fs laser pulses in lithium niobate using tilted-pulse-front pumping. The enhancement of conversion efficiency by a factor of 2.4 to 2.7 was demonstrated up to 186 μJ THz energy by cryogenic cooling of the generating crystal and using up to 18.5 mJ/cm2 pump fluence. Generation of THz pulses with more than 0.4 mJ energy and 0.77% efficiency was demonstrated even at room temperature by increasing the pump fluence to 186 mJ/cm2. The spectral peak is at about 0.2 THz, suitable for charged-particle manipulation.
authors.forename: J A
authors.initials: JA
authors.lastname: Fülöp
authors.forename: Z
authors.initials: Z
authors.lastname: Ollmann
authors.forename: Cs
authors.initials: C
authors.lastname: Lombosi
authors.forename: C
authors.initials: C
authors.lastname: Skrobol
authors.forename: S
authors.initials: S
authors.lastname: Klingebiel
authors.forename: L
authors.initials: L
authors.lastname: Pálfalvi
authors.forename: F
authors.initials: F
authors.lastname: Krausz
authors.forename: S
authors.initials: S
authors.lastname: Karsch
authors.forename: J
authors.initials: J
authors.lastname: Hebling