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The implementation of multilayer optics for the compression and delivery of few-cycle femtosecond pulses will be discussed in the case of several cutting-edge applications.
The carrier-envelope phase of every single shot emitted by a 10 kHz, mJ-class amplifier is measured with a fast spectrometer. A novel high-speed actuator allows arbitrary phase control, with closed-loop integrated phase noise on seed oscillator level (98 mrad, 5·105 shots, 50 s).
We demonstrate a novel scheme for improved feed-forward CEP stabilization of laser amplifiers. Synthesized acoustic few-cycle transients are used to stabilize the CEP of an optical pulse train at the amplifier repetition rate.
We present a single-shot, in-situ interferometric method for measuring phase changes experienced by laser pulses upon nonlinear propagation. With this method we characterized the intensity-dependent phase fluctuations emerging in hollow fiber compressors.
The thin-disk (TD) technology allowed reaching unprecedentedly high average powers and high energies with sub-ps pulses directly from oscillators [1,2,3]. Such oscillators can be considered as an extremely attractive alternative to Ti:Sa oscillators, the working horses of the ultrafast community. However, two more features are missing to make TD oscillators a suitable substitute to Ti:Sa oscillators:...
A compact system for the generation of few-cycle multi-mJ carrier envelope phase (CEP) stabilized pulses is presented. The output 5.4 fs, 1.9 mJ pulses have CEP noise of only 190 mrad rms over seven hours.
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