Skip to main content

5 Result(s)

within U. Siegner Remove this filter

and

  1. No Access

    Article

    Magnetism in V-/Mn-doped ZnO layers fabricated on sapphire

    Do** ZnO with transition metals (TM) is an obvious approach to produce diluted magnetic semiconductors for magnetoelectronic and spintronic applications. We have carried out experimental studies on the fabri...

    A.C. Mofor, F. Reuss, A. El-Shaer, R. Kling, E. Schlenker, A. Bakin… in Applied Physics A (2007)

  2. No Access

    Article

    Ultrafast optics establishes metrological standards in high-frequency electronics

    A measurement system is reported that allows for the complete characterization of high-speed oscilloscopes. The measurements are based on ultrafast optical methods, which are used to generate picosecond electr...

    M. Bieler, M. Spitzer, G. Hein, U. Siegner, E.O. Göbel in Applied Physics A (2004)

  3. No Access

    Article

    Low-threshold high-dynamic-range optical limiter for ultra-short laser pulses

    We demonstrate an optical limiter for ultra-short (∼100-fs) laser pulses. The device has a dynamic range (= damage energy/onset-of-limiting energy) of more than 10000 and an onset-of-limiting energy of only ∼1...

    A. Neve**a-Sturhan, O. Werhahn, U. Siegner in Applied Physics B (2002)

  4. No Access

    Chapter and Conference Paper

    Time-Resolved Picosecond Photon Echo Studies of Phase Relaxation in CdSSe Mixed Crystals

    Phase relaxation of optical excitations in condensed matter can be studied by coherent four—wave—mixing experiments in the time domain without requiring assumptions on the spectral properties of the material. ...

    U. Siegner, G. Noll, S. G. Shevel, E. O. Göbel in Ultrafast Phenomena VII (1990)

  5. No Access

    Article

    Synchronized picosecond pulse generation with a synchronously pumped dye laser and a compressed Nd: YAG laser for non-degenerate transient grating experiments

    We have set up a laser system which simultaneously provides synchronized picosecond pulses in the visible and at a wavelength of 1.06 μm with a repetition rate of 76 MHz. The set-up consists of a dye laser syn...

    U. Siegner, G. Noll, E. O. Göbel in Applied Physics B (1989)