We produce 1.5 cycle (10.5 fs), 1.2 mJ, 3 kHz carrier-envelope-phase-stable pulses at 2.1 μm carrier wavelength, from a three-stage optical parametric chirped-pulse amplifier system, pumped by an optically synchronized 1.6 ps Yb:YAG thin disk laser. A chirped periodically poled lithium niobate crystal is used to generate the ultrabroad spectrum needed for a 1.5 cycle pulse through difference frequency mixing of spectrally broadened pulse from a Ti:sapphire amplifier. It will be an ideal tool for producing isolated attosecond pulses with high photon energies.
© 2012 Optical Society of America
Lasers and Laser Optics
Original Manuscript: September 26, 2012
Manuscript Accepted: October 16, 2012
Published: November 29, 2012
Yunpei Deng, Alexander Schwarz, Hanieh Fattahi, Moritz Ueffing, Xun Gu, Marcus Ossiander, Thomas Metzger, Volodymyr Pervak, Hideki Ishizuki, Takunori Taira, Takayoshi Kobayashi, Gilad Marcus, Ferenc Krausz, Reinhard Kienberger, and Nicholas Karpowicz, "Carrier-envelope-phase-stable, 1.2 mJ, 1.5 cycle laser pulses at 2.1 μm," Opt. Lett. 37, 4973-4975 (2012)