title: 200  kHz 5.5  W Yb(3+): YVO4-based chirped-pulse regenerative amplifier.
abstract: A chirped-pulse regenerative amplifier based on a Yb:YVO4 (Yb:YVO) crystal was demonstrated for the first time, to our knowledge. A novel wavelength-independent off-axis technique was used to deliver 26.6 W of pump power with a low quantum defect. It was seeded by means of a 120 fs Yb:YVO4 oscillator. It generates as much as 5.5 W of average output power with chirped pulses and 4.2 W with 200 fs compressed pulses at a 200 kHz repetition rate. A maximum pulse energy of 140 μJ was obtained at pulse repetition frequencies up to 25 kHz at the central wavelength of 1018 nm.
authors.forename: Alexander
authors.initials: A
authors.lastname: Rudenkov
authors.forename: Viktor
authors.initials: V
authors.lastname: Kisel
authors.forename: Vladimir
authors.initials: V
authors.lastname: Matrosov
authors.forename: Nikolai
authors.initials: N
authors.lastname: Kuleshov
mesh_terms: D000669:Amplifiers, Electronic; D004867:Equipment Design; D053844:Lasers, Solid-State; D010087:Oxides / Q000737:chemistry; D013057:Spectrum Analysis; D014638:Vanadates / Q000737:chemistry*; D017968:Vanadium Compounds / Q000737:chemistry*; D015018:Ytterbium / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: D010087:Oxides; D017968:Vanadium Compounds; D014638:Vanadates; D015019:Yttrium; D015018:Ytterbium