Carrier-envelope-phase-stable, 1.2 mJ, 1.5 cycle laser pulses at 2.1 μm

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, Nicholas Karpowicz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

171 Scopus citations


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.

Original languageAmerican English
Pages (from-to)4973-4975
Number of pages3
JournalOptics Letters
Issue number23
StatePublished - 1 Dec 2012


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