Erlangen 2022 – wissenschaftliches Programm

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K: Fachverband Kurzzeit- und angewandte Laserphysik

K 3: Pulsed Power - XUV and EUV Sources and their Applications

K 3.4: Vortrag

Mittwoch, 16. März 2022, 15:15–15:30, K-H4

Table-top nanoscale imaging with XUV and soft X-ray radiation — •David Theidel¹, Philip Mosel^{1, 2}, Elisa Appi^{1, 2}, Pranitha Sankar^{1, 2}, Uwe Morgner^{1, 2}, and Milutin Kovacev^{1, 2} — ¹Institute of Quantum Optics, Leibniz University Hannover Welfengarten 1, 30167 Hannover — ²Cluster of Excellence PhoenixD

With the development of high-flux coherent light sources in the extreme ultraviolet (XUV) regime by using high-order harmonic generation (HHG), table-top imaging of nanoscale structures is becoming an serious alternative to similar experiments at free-electron laser facilities. In this work, we present experimental challenges and development process of a new short-wavelength microscope with the goal to apply different imaging schemes on artificial nanostructured targets and biological samples. Using a HHG source, we generate coherent XUV radiation from infrared ultrashort laser pulses in gas down to 13.1 nm [1]. We analyse the generated radiation in terms of brilliance and coherence properties to evaluate their applicability for coherent and incoherent imaging methods [2, 3]. Moreover, future extension of these methods to partially coherent soft X-ray sources will be discussed.

[1] Steingrube, Daniel S., et al. "Phase matching of high-order harmonics in a semi-infinite gas cell." Physical Review A 80.4 (2009)

[2] Rothhardt, Jan, et al. "Table-top nanoscale coherent imaging with XUV light." Journal of Optics 20.11 (2018): 113001.

[3] Schneider, Raimund, et al. "Quantum imaging with incoherently scattered light from a free-electron laser." Nature Physics 14.2 (2018)