Zobrazeno 1 - 10
of 217
pro vyhledávání: '"Rothhardt, Jan"'
Autor:
Kodgirwar, Shantanu, Loetgering, Lars, Liu, Chang, Joseph, Aleena, Licht, Leona, Molina, Daniel S. Penagos, Eschen, Wilhelm, Rothhardt, Jan, Habeck, Michael
The limited dynamic range of the detector can impede coherent diffractive imaging (CDI) schemes from achieving diffraction-limited resolution. To overcome this limitation, a straightforward approach is to utilize high dynamic range (HDR) imaging thro
Externí odkaz:
http://arxiv.org/abs/2403.11344
We examine the interplay between spectral bandwidth and illumination curvature in ptychography. By tailoring the divergence of the illumination, broader spectral bandwidths can be tolerated without requiring algorithmic modifications to the forward m
Externí odkaz:
http://arxiv.org/abs/2305.08954
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:
Loetgering, Lars, Du, Mengqi, Flaes, Dirk Boonzajer, Aidukas, Tomas, Wechsler, Felix, Molina, Daniel S. Penagos, Rose, Max, Pelekanidis, Antonios, Eschen, Wilhelm, Hess, Jürgen, Wilhein, Thomas, Heintzmann, Rainer, Rothhardt, Jan, Witte, Stefan
Conventional (CP) and Fourier (FP) ptychography have emerged as versatile quantitative phase imaging techniques. While the main application cases for each technique are different, namely lens-less short wavelength imaging for CP and lens-based visibl
Externí odkaz:
http://arxiv.org/abs/2301.06595
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:
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 manuscript we demonstrate a method to reconstruct the wavefront of focused beams from a measured diffraction pattern behind a diffracting mask in real-time. The phase problem is solved by means of a neural network, which is trained with simul
Externí odkaz:
http://arxiv.org/abs/2101.05082
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