The FemtoSpeX facility at BESSY II

Niko Pontius, Karsten Holldack, Christian Schüßler-Langeheine, Torsten Kachel, Rolf Mitzner


The FemtoSpeX facility of the BESSY II storage ring is dedicated to ultrafast optical-pump & soft  x-ray probe experiments. Experimental end-stations for experiments in transmission, reflection, and diffraction geometry are available.


Bergeard, N., Lopez-Flores, V., Halte, V., Hehn, M., Stamm, C., Pontius, N., . . . Boeglin, C. (2014). Ultrafast angular momentum transfer in multisublattice ferrimagnets. Nature Communications, 5.

Boeglin, C., Beaurepaire, E., Halte, V., Lopez-Flores, V., Stamm, C., Pontius, N., . . . Bigot, J. Y. (2010). Distinguishing the ultrafast dynamics of spin and orbital moments in solids. Nature, 465(7297), 458-U78.

Brzhezinskaya, M., Firsov, A., Holldack, K., Kachel, T., Mitzner, R., Pontius, N., . . . Erko, A. (2013). A novel monochromator for experiments with ultrashort X-ray pulses. Journal of synchrotron radiation, 20(4), 522-530.

Eschenlohr, A., Battiato, M., Maldonado, R., Pontius, N., Kachel, T., Holldack, K., . . . Stamm, C. (2013). Ultrafast spin transport as key to femtosecond demagnetization. Nature Materials, 12(4), 332-336.

Holldack, K., Bahrdt, J., Balzer, A., Bovensiepen, U., Brzhezinskaya, M., Erko, A., . . . Foehlisch, A. (2014). FemtoSpeX: a versatile optical pump-soft X-ray probe facility with 100 fs X-ray pulses of variable polarization. Journal of synchrotron radiation, 21(5), 1090-1104.

Holldack, K., Pontius, N., Schierle, E., Kachel, T., Soltwisch, V., Mitzner, R., . . . Weschke, E. (2010). Ultrafast dynamics of antiferromagnetic order studied by femtosecond resonant soft x-ray diffraction. Applied Physics Letters, 97(6).

Izquierdo, M., Karolak, M., Trabant, C., Holldack, K., Föhlisch, A., Kummer, K., . . . Molodtsov, S. L. (2014). Laser-induced charge-disproportionated metallic state in lacoo3. Phys. Rev. B, 90, 235128.

Khan, S., Holldack, K., Kachel, T., Mitzner, R., & Quast, T. (2006). Femtosecond undulator radiation from sliced electron bunches. Physical Review Letters, 97, 074801.

Radu, I., Vahaplar, K., Stamm, C., Kachel, T., Pontius, N., Duerr, H. A., . . . Kimel, A. V. (2011). Transient ferromagnetic-like state mediating ultrafast reversal of antiferromagnetically coupled spins. Nature, 472(7342), 205-208.

Stamm, C., Kachel, T., Pontius, N., Mitzner, R., Quast, T., Holldack, K., . . . Eberhardt, W. (2007). Femtosecond modification of electron localization and transfer of angular momentum in nickel. Nature Materials, 6(10), 740-743. 5

Trabant, C., Pontius, N., Schierle, E., Weschke, E., Kachel, T., Springholz, G., . . . Schüßler-Langeheine, C. (2013). Time and momentum resolved resonant magnetic x-ray diffraction on eute. EPJ Web of Conferences, 41, 03014.

Wietstruk, M., Melnikov, A., Stamm, C., Kachel, T., Pontius, N., Sultan, M., . . . Bovensiepen, U. (2011). Hot-electron-driven enhancement of spin-lattice coupling in gd and tb 4 f ferromagnets observed by femtosecond x-ray magnetic circular dichroism. Phys. Rev. Lett., 106, 127401.

Cite article as: Helmholtz-Zentrum Berlin für Materialien und Energie et al. (2016). The FemtoSpeX facility at BESSY II. Journal of large-scale research facilities, 2, A46.




  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.