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Proceedings Paper

Development of ultrafast soft x-ray beamline based on high-order harmonic generation at PALS
Author(s): Krzysztof Jakubczak; Tomas Mocek; Bedrich Rus; I Jong Kim; Deuk Su Kim; Gae Hwang Lee; Dong Hyuk Ko; Chang Hee Nam
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Paper Abstract

We report on the development of ultrafast coherent soft X-ray beamline at the Prague Asterix Laser System (PALS) Research Center intended for interdisciplinary applications such as ablation and controlled surface modification of solid materials for a micro/nano-patterning, soft X-ray interferometry and holography for surface probing with nanometric resolution, and improvement of focusing optics for soft X-ray beams. The beamline is based on 1 kHz, table-top, highorder harmonic generation (HHG) source capable of delivering fully coherent beam, tunable in the 13 - 40 nm spectral range. The Ti:sapphire (810 nm) laser pulses with a duration of 35 fs and energy 1.1 mJ are focused into a static gas cell containing conversion medium (Ar). To achieve highly efficient HHG at 30 nm we apply the technique of guided laser pulses. Experimental results on HHG source characterization, optimization, and spectral tunability are presented. Achievements on the implementation of so called two-color HHG using gas cell have been reported for the first time. The complete beamline will consist of a tandem of two vacuum chambers: one for the HHG source and its diagnostics, and second intended for the application experiments. The access to this new soft X-ray installation will be opened to external users since 2009.

Paper Details

Date Published: 20 November 2008
PDF: 7 pages
Proc. SPIE 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 71410O (20 November 2008); doi: 10.1117/12.822369
Show Author Affiliations
Krzysztof Jakubczak, Institute of Physics (Czech Republic)
Tomas Mocek, Institute of Physics (Czech Republic)
Bedrich Rus, Institute of Physics (Czech Republic)
I Jong Kim, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Deuk Su Kim, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Gae Hwang Lee, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Dong Hyuk Ko, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Chang Hee Nam, Korea Advanced Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 7141:
16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Agnieszka Popiolek-Masajada; Elzbieta Jankowska; Waclaw Urbanczyk, Editor(s)

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