Dresden 2014 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 35: Poster I: Application of thin films; Focus session: Sensoric micro and nano-systems; Focus Session: Sustainable photovoltaics with earth abundant materials; Graphen (joint session with TT; MA; HL; DY; O); Ion and electron beam induced processes; Layer properties: electrical, optical, and mechanical properties; Magnetic/organic interfaces, spins in organics and molecular magnetism; Micro- and nanopatterning (jointly with O); Organic electronics and photovoltaics (jointly with CPP, HL, O); Thermoelectric materials
DS 35.12: Poster
Mittwoch, 2. April 2014, 17:00–20:00, P1
Low chromatic dispersion and high diffraction efficiency of zone plate for XUV and soft X-ray bandwidth — •Huaihai Pan1,2, Christian Späth3, Alexander Guggenmos1,3, Jürgen Schmidt3, Soo Hoon Chew1,3, Quanzhong Zhao2, and Ulf Kleineberg1,3 — 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany — 2State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China — 3Ludwig-Maximilians-Universität München, Fakultät für Physik, Am Coulombwall 1, 85748 Garching, Germany
Zone plate has a great potential in achieving high spatial resolution for the XUV and X-ray radiations [1]. However, due to strong chromatic dispersion [2] and low diffraction efficiency of the zone plate, the highest achievable spatial resolution is limited. Here we report the theoretical calculation based on the design of achromatic optics [3] which can potentially reduce chromatic dispersion and improve diffraction efficiency. Such optics is a combination of zone plate and lens, in which the positive dispersion induced by lens can compensate the negative dispersion induced by zone plate. An ultrafast laser pulse with a duration of 120 as and central wavelength at 13.5 nm is employed. The simulated results show that the intensity distribution of propagation is partially achromatic and the specific profile of zone plate can improve the diffraction efficiency at first order diffraction. [1] W. Chao, et al., Opt. Express 17, 17669 (2009).[2] J. Kirz., J. Opt. Soc. Am. 64, 301 (1974).[3] Y. Wang, et al., Nature 424, 50 (2003).