title: Efficient generation of ultra-intense few-cycle radially polarized laser pulses.
abstract: We report on efficient generation of millijoule-level, kilohertz-repetition-rate few-cycle laser pulses with radial polarization by combining a gas-filled hollow-waveguide compression technique with a suitable polarization mode converter. Peak power levels >85  GW are routinely achieved, capable of reaching relativistic intensities >10(19)  W/cm2 with carrier-envelope-phase control, by employing readily accessible ultrafast high-energy laser technology.
authors: Sergio
authors: S
authors: Carbajo
authors: Eduardo
authors: E
authors: Granados
authors: Damian
authors: D
authors: Schimpf
authors: Alexander
authors: A
authors: Sell
authors: Kyung-Han
authors: KH
authors: Hong
authors: Jeffrey
authors: J
authors: Moses
authors: Franz X
authors: FX
authors: Kärtner