We introduce a high-harmonic generation (HHG)-based XUV source that offers a broad photon flux range from 40 eV to 150 eV. This source utilizes an industrial-grade TruMicro 2030 laser system with 20-W average power, delivering up to 100 µJ with pulse durations under 400 fs. A post-compression unit is incorporated to reduce the pulses to approximately 40 fs with just a 10% average power loss. The turnkey source achieves a photon flux exceeding 10^10 photons/s around 70 eV.
We report on multi-100W ultrafast laser sources based on industrialized components which deliver pulse energies starting from sub-mJ to well exceeding 200mJ. These sources are based on ytterbium-doped laser media which intrinsically have very high efficiencies and therefore allow for stable operation at high average powers but are limited due to the supported bandwidth to some 100fs pulse durations. The presented setups compress this type of pulses to well below 50fs with a single SPM-based stage which adds approximately an order of magnitude in pulsed peak power. Adding a second stage allows for even shorter pulses in the few-cycle regime where even the carrier-envelope phase of the pulses is of relevance and consequently has to be characterized and stabilized.
We present a HHG-based XUV source providing large photon flux across a wide range between 40 eV and 150 eV. It is driven by an industrial-grade TruMicro 2030 20-W average power laser system delivering up to 100 µJ at <400-fs pulse duration. A post-compression unit is part of the device to shorten the pulses to approx. 40 fs at only 10% average power loss. The turnkey source provides photon flux of >10^10 photons/s near 70 eV.
We present a sub-2-cycle laser system combining high average power, pulse energy and repetition rate with CEP-stable operation. The laser system creates 300 fs pulses with 1.8 mJ pulse energy that are nonlinearly post-compressed down to few optical cycles in two subsequent multipass cells (MPC). A pulse duration of 5.8fs (sub-2-cycle) at a pulse energy of 1.1mJ in combination with 110W average power (100 kHz) is achieved. This corresponds to the shortest pulses and highest compressed average power for few-cycle MPCs. Furthermore, the carrier-to-envelope-phase stability amounts to 300 mrad for frequencies above 2 kHz as measured by stereo—above-threshold-ionization (ATI).
High harmonic generation at high repetition rate is realized with a high average power 100W, 600kHz fiber laser system. Optimization is done for two different operation regimes. At 69-75eV the source delivers a world-record photon flux of >10^11photons/s/harmonic when using argon gas jets. The use of neon gas allows for operation at significantly shorter wavelength. The important 93eV harmonic can be generated at 5·10^9 photons/s/(1% bandwidth), while even higher values of >10^10 photons/s/(1% bandwidth) are achieved between 115-140eV. The HHG source provides excellent long-term power stability of ~1% RMS for each of the operation regimes.
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