Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Klas, Robert"'
Autor:
Eschen, Wilhelm, Liu, Chang, Molina, Daniel S. Penagos, Klas, Robert, Limpert, Jens, Rothhardt, Jan
We present high-speed and wide-field EUV ptychography at 13.5 nm wavelength using a table-top high-order harmonic source. By employing a scientific complementary metal oxide semiconductor (sCMOS) detector the scan time for sub-20 nm high-resolution m
Externí odkaz:
http://arxiv.org/abs/2302.14147
Autor:
Liu, Chang, Eschen, Wilhelm, Loetgering, Lars, Molina, Daniel S., Klas, Robert, Iliou, Alexander, Steinert, Michael, Herkersdorf, Sebastian, Kirsche, Alexander, Pertsch, Thomas, Hillmann, Falk, Limpert, Jens, Rothhardt, Jan
Publikováno v:
PhotoniX 4, 6 (2023)
Table-top extreme ultraviolet (EUV) microscopy offers unique opportunities for label-free investigation of biological samples. Here, we demonstrate ptychographic EUV imaging of two dried, unstained model specimens: germlings of a fungus (Aspergillus
Externí odkaz:
http://arxiv.org/abs/2211.04135
Autor:
Eschen, Wilhelm, Loetgering, Lars, Schuster, Vittoria, Klas, Robert, Kirsche, Alexander, Berthold, Lutz, Steinert, Michael, Pertsch, Thomas, Gross, Herbert, Krause, Michael, Limpert, Jens, Rothhardt, Jan
Microscopy with extreme ultraviolet (EUV) radiation holds promise for high-resolution imaging with excellent material contrast, due to the short wavelength and numerous element-specific absorption edges available in this spectral range. At the same t
Externí odkaz:
http://arxiv.org/abs/2112.13046
Autor:
Gebhardt, Martin, Amuah, Emmanuel B., Klas, Robert, Stark, Henning, Buldt, Joachim, Steinkopff, Albrecht, Limpert, Jens
Publikováno v:
Optics Express Vol. 29, Issue 5, pp. 6957-6966 (2021)
Differentially pumped capillaries, i.e., capillaries operated in a pressure gradient environment, are widely used for nonlinear pulse compression. In this work, we show that strong pressure gradients and high gas throughputs can cause spatiotemporal
Externí odkaz:
http://arxiv.org/abs/2102.12749
Autor:
Buldt, Joachim, Mueller, Michael, Klas, Robert, Eidam, Tino, Limpert, Jens, Tuennermann, Andreas
Publikováno v:
Optics Letters Vol. 42, Issue 19, pp. 3761-3764 (2017)
We present a novel approach for temporal contrast enhancement of energetic laserpulses by filtered SPM broadened spectra. A measured temporal contrast enhancement by at least 7 orders of magnitude in a simple setup has been achieved. This technique i
Externí odkaz:
http://arxiv.org/abs/2101.08602
Autor:
Müller, Michael, Klenke, Arno, Gottschall, Thomas, Klas, Robert, Rothhardt, Carolin, Demmler, Stefan, Rothhardt, Jan, Limpert, Jens, Tünnermann, Andreas
We present an ultrafast fiber laser system delivering 4.6 W average power at 258 nm based on two-stage fourth-harmonic generation in beta barium borate (BBO). The beam quality is close to diffraction limited with an M2- value of 1.3 x 1.6. The pulse
Externí odkaz:
http://arxiv.org/abs/2101.08500
Autor:
Hädrich, Steffen, Kienel, Marco, Müller, Michael, Klenke, Arno, Rothhardt, Jan, Klas, Robert, Gottschall, Thomas, Eidam, Tino, Drozdy, András, Jójárt, Péter, Várallyay, Zoltán, Cormier, Eric, Osvay, Károly, Tünnermann, Andreas, Limpert, Jens
Few-cycle lasers are essential for many research areas such as attosecond physics that promises to address fundamental questions in science and technology. Therefore, further advancements are connected to significant progress in the underlying laser
Externí odkaz:
http://arxiv.org/abs/2101.08185
In this work the experimental realization of a tunable high photon flux extreme ultraviolet light source is presented. This is enabled by high harmonic generation of two temporally delayed driving pulses, resulting in a tuning range of 0.8 eV at the
Externí odkaz:
http://arxiv.org/abs/2101.04101
Autor:
Schuster, Vittoria, Liu, Chang, Klas, Robert, Dominguez, Pablo, Rothhardt, Jan, Limpert, Jens, Bernhardt, Birgitta
Publikováno v:
Optics Express Vol. 29, Issue 14, pp. 21859-21875 (2021)
Dual Comb Spectroscopy proved its versatile capabilities in molecular fingerprinting in different spectral regions, but not yet in the ultraviolet (UV). Unlocking this spectral window would expand fingerprinting to the electronic energy structure of
Externí odkaz:
http://arxiv.org/abs/2006.03309
Autor:
Tschernajew Maxim, Hilbert Vinzenz, Klas Robert, Heilmann Anke, Herrfurth Oliver, Breitkopf Sven, Rothhardt Jan, Eidam Tino, Limpert Jens
Publikováno v:
EPJ Web of Conferences, Vol 307, p 02053 (2024)
We present a highly stable, easy-to-use, table-top coherent XUV source delivering a brightness of >1kW/(mm²sr)/1%BW at 130eV (9.5nm). It is based on high-harmonic generation driven by an ultrastable ytterbium-based fiber laser and a multipass-cell-b
Externí odkaz:
https://doaj.org/article/e6f752f5c98c4bd48d7cba4493e13522
