Sub-10-fs pulses tunable from 480 to 980 nm from a NOPA pumped by an Yb:KGW source.

We describe two noncollinear optical parametric amplifier (NOPA) systems pumped by either the second (515 nm) or the third (343 nm) harmonic from an Yb:KGW source. Pulse durations as short as 6.8 fs are readily obtained by compression with chirped mirrors. The availability of both the second and third harmonics for NOPA pumping allows for gap-free tuning from 520 to 980 nm. The use of an intermediate NOPA to generate seed light at 780 nm extends the tuning range of the third harmonic pumped NOPA toward 450 nm.

[1]  Andy Steinmann,et al.  Generation of few-cycle pulses directly from a MHz-NOPA. , 2006, Optics express.

[2]  Sub-two-cycle light pulses at 1.6 μm from an optical parametric amplifier , 2008 .

[3]  G. Cerullo,et al.  Pulse compression over a 170-THz bandwidth in the visible by use of only chirped mirrors. , 2001, Optics letters.

[4]  C. Homann,et al.  Generation of 30 fs pulses tunable from 189 to 240 nm with an all-solid-state setup , 2012 .

[5]  D. Kane,et al.  Characterization of arbitrary femtosecond pulses using frequency-resolved optical gating , 1993 .

[6]  C. Homann,et al.  Octave wide tunable UV-pumped NOPA: pulses down to 20 fs at 0.5 MHz repetition rate. , 2008, Optics express.

[7]  Andrew G. Glen,et al.  APPL , 2001 .

[8]  E. Riedle,et al.  Sub-20 fs μJ-energy pulses tunable down to the near-UV from a 1 MHz Yb-fiber laser system. , 2014, Optics letters.

[9]  S. Silvestri,et al.  Ultrafast optical parametric amplifiers , 2003 .

[10]  F. Kartner,et al.  Coherent synthesis of ultra-broadband optical parametric amplifiers , 2012, 2012 Conference on Lasers and Electro-Optics (CLEO).

[11]  Takao Fuji,et al.  Visible pulse compression to 4 fs by optical parametric amplification and programmable dispersion control. , 2002, Optics letters.

[12]  Eberhard Riedle,et al.  Tunable sub-10-fs ultraviolet pulses generated by achromatic frequency doubling. , 2004, Optics letters.

[13]  Tino Lang,et al.  Two-color pumped OPCPA system emitting spectra spanning 1.5 octaves from VIS to NIR. , 2012, Optics express.

[14]  Eberhard Riedle,et al.  Femtosecond continuum generation in bulk laser host materials with sub-μJ pump pulses , 2009 .

[15]  E. Riedle,et al.  Sub-20-fs pulses tunable across the visible from a blue-pumped single-pass noncollinear parametric converter. , 1997, Optics letters.

[16]  S. Silvestri,et al.  Sub-8-fs pulses from an ultrabroadband optical parametric amplifier in the visible. , 1998, Optics letters.

[17]  S. Alisauskas,et al.  Scalable Yb-MOPA-driven carrier-envelope phase-stable few-cycle parametric amplifier at 1.5 microm. , 2009, Optics letters.