title: 75 MW few-cycle mid-infrared pulses from a collinear apodized APPLN-based OPCPA.
abstract: We present an ultra-broadband optical parametric chirped-pulse amplification (OPCPA) system operating at 3.4 µm center wavelength with a peak power of 75 MW. The OPCPA system is split into a pre- and a power-amplifier stage. Both stages are based on apodized aperiodically poled MgO:LiNbO3 (APPLN). The collinear mixing configuration allows us to manipulate the spectral phase of the output mid-infrared pulses by sending the near-infrared seed pulses through a pulse shaper. The system delivers clean 75-fs pulses with record-high 700 mW average power, corresponding to 7 µJ of pulse energy at a repetition rate of 100 kHz.
authors.affiliation: Department of Physics, Institute of Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland.
authors.forename: C
authors.initials: C
authors.lastname: Heese
authors.forename: C R
authors.initials: CR
authors.lastname: Phillips
authors.forename: B W
authors.initials: BW
authors.lastname: Mayer
authors.forename: L
authors.initials: L
authors.lastname: Gallmann
authors.forename: M M
authors.initials: MM
authors.lastname: Fejer
authors.forename: U
authors.initials: U
authors.lastname: Keller
mesh_terms: D000669:Amplifiers, Electronic; D003198:Computer Simulation; D004735:Energy Transfer; D004867:Equipment Design; D006801:Humans; D008027:Light; D008962:Models, Theoretical; D055096:Optical Devices; D009991:Oscillometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*