V. Allouche

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The x-ray broadband spectrometer, DMX, is among the first plasma diagnostics to be deployed on Laser Megajoule (LMJ). The emitted x-ray spectrum from laser-produced plasmas is measured in 20 channels from 50 eV up to 20 keV. Each band combines mirrors and filters which realize x-ray band-pass filter and a coaxial diode coupled by a coaxial cable with a fast(More)
Targeting [DC-20 GHz] bandwidth and 40 GS/s sampling rate for high dynamic range (60 dB) ultra fast signal analysis, we present the preliminary experimental results obtained on InP-InGaAs-InP double heterojunction bipolar transistor based MMIC (FT = 180 GHz). The critical circuits leading to wide band signal sampling operation are made of high bandwidth(More)
—The design of a single shot sampling circuit allowing 20GHz bandwidth random signal and the experimental results of the main circuits are described. Assuming a temporal analysis depth of 5ns, this circuit, based on the principle of non simultaneous spatial sampling and realized in InP HBT MMIC (FT=180GHz) and CPW propagation line, can reach a truly(More)
This paper describes the design and realization of a buffered track and hoId (BTH) circuit fabricated in InP-InGaAs-InP double heterojunction bipolar transistor (DHBT) technology (F<sub>T</sub> = 180 GHz). This BTH is intended for a single shot, 20 GHz bandwidth and 40 GS/s sampling frequency digitizer based on the non simultaneous spatial sampling(More)
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