The characterization of a single laser pulse in real-time is of great interest. Here, the difficulty of detection originates from the required resolution in time (about a factor of ten higher than the measuring pulse). This concerns not only the sampling resolution but the sampling rate as well.<br><br> The invention allows single-shot laser pulse characterization with a time resolution in the THz regime. It consists of a laser system that provides the sampling pulse, an optical element (e.g. non-linear crystal) which generates the measuring signal through superposition of the sampling pulse and the measuring pulse, and a third element for the detection.<br><br> The method based on the transformation of the problem from the time domain into the spectral domain. The sampling laser is a laser system which provides light pulses that have different wavelengths at different time. With an optical element (e.g. grating) it is possible to seperate the wavelength components in space. Therefore, the detection of the sampling points with minimal spatial distance is possible without any problem. This means, every spectral component can be assigned to a distinct time. <br><br> This single-shot optical sampling offers a resolution in the femtosecond time domain.<br><br>
firstname.lastname@example.org | TechnologieAllianz e.V.
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Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
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Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
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In an article that appears in the journal “Review of Modern Physics”, researchers at the Laboratory for Attosecond Physics (LAP) assess the current state of the field of ultrafast physics and consider its implications for future technologies.
Physicists can now control light in both time and space with hitherto unimagined precision. This is particularly true for the ability to generate ultrashort...
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