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The stationarity region, i.e., the area in which the statistics of a propagation channel remain constant, is an important measure of the propagation channel, and essential for efficient system design. This paper presents what is to our knowledge the first extensive measurement campaign for measuring the stationarity region of MIMO mm-wave channels. Using a novel 28 GHz phased-array sounder with high...
The European XFEL is an extremely brilliant Free Electron Laser Source with a very demanding pulse structure: trains of 2700 X-Ray pulses are repeated at 10 Hz. The pulses inside the train are spaced by 220 ns and each one contains up to 1012 photons of 12.4 keV, while being ≤ 100 fs in length. AGIPD (Adaptive Gain Integrating Pixel Detector) is a hybrid 1M-pixel detector developed by DESY, PSI, and...
We experimentally demonstrate a new coherent absorption phenomenon, through which a planar photonic metamaterial may resonantly absorb 100% of incident light. The effect is a time-reversed analogue ‘Lasing Spaser’ action.
Experiments of photoionized plasmas and shock wave generation, which are related to laboratory astrophysics, have been performed with the Shengguang II laser facility. Some preliminary results are presented in this paper.
E-SPART analyzer is an instrument capable of measuring aerodynamic diameter and electrostatic charge distributions on a single particle basis in real time. A frequency biased laser Doppler velocimeter (LDV) is used to make non- contact in-situ analysis of the particles under ambient conditions, with respect to the temperature, pressure, and composition of the gaseous medium in which the particles...
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