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"Carrier-envelope phase stable sub-two-cycle pulses tunable around 1.8 µm at 100 kHz" C. Homann, M. Bradler, M. Förster, P. Hommelhoff, and E. RiedleOpt. Lett. 37, 1673 (2012). Abstract: We present a simple and efficient concept for the generation of ultrashort infrared pulses with passively stabilized carrier-envelope phase at 100 kHz repetition rate. The central wavelength is tunable between 1.6 and 2.0 μm with pulse durations between 8.2 and 12.8 fs, corresponding to a sub-two-cycle duration over the whole tuning range. Pulse energies of up to 145 nJ are achieved. As a first application we measure the high non-linearity of multiphoton photoemission from a nanoscale metal tip. BMO authors (in alphabetic order): Maximilian Bradler Christian Homann Eberhard Riedle  WWW-Version |