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Optimizing an interleaved p-n junction to reduce energy dissipation in silicon slow-light modulators

Photonics Research 2020年第4期8卷 457-467页

作者： marco passoni DARIO GERACE LIAM O’FAOLAIN LUCIO CLAUDIO ANDREANI Department of Physics University of Pavia27100 PaviaItaly Centre for Advanced Photonics and Process Analysis Cork Institute of TechnologyCorkIreland Tyndall National Institute CorkIreland Institute for Photonics and Nanotechnologies(IFN)-CNR 20133 MilanoItaly

Reducing power dissipation in electro-optic modulators is a key step for widespread application of silicon photonics to optical *** this work,we design Mach–Zehnder modulators in the silicon-on-insulator platform,which make use of slow light in a waveguide grating and of a reverse-biased p-n junction with interleaved contacts along the waveguide *** optimizing the junction parameters,we discuss the full simulation of the modulator in order to find a proper trade-off among various figures of merit,such as modulation efficiency,insertion loss,cutoff frequency,optical modulation amplitude,and dissipated energy per *** with conventional structures(with lateral p-n junction and/or in rib waveguides without slow light)highlights the importance of combining slow light with the interleaved p-n junction,thanks to the increased overlap between the travelling optical wave and the depletion *** a surprising result,the modulator performance is improved over an optical bandwidth that is much wider than the slow-light bandwidth.

关键词： Optimizing an interleaved p-n reduce energy silicon slow-light modulators

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Targets for high repetition rate laser facilities:needs,challenges and perspectives

引用

High Power Laser Science and Engineering 2017年第3期5卷 10-40页

作者： I.Prencipe J.Fuchs S.Pascarelli D.W.Schumacher R.B.Stephens N.B.Alexander R.Briggs M.Büscher M.O.Cernaianu A.Choukourov M.De marco A.Erbe J.Fassbender G.Fiquet P.Fitzsimmons C.Gheorghiu J.Hund L.G.Huang M.Harmand N.J.Hartley A.Irman T.Kluge Z.Konopkova S.Kraft D.Kraus V.Leca D.Margarone J.Metzkes K.Nagai W.Nazarov P.Lutoslawski D.Papp M.passoni A.Pelka J.P.Perin J.Schulz M.Smid C.Spindloe S.Steinke R.Torchio C.Vass T.Wiste R.Zaffino K.Zeil T.Tschentscher U.Schramm T.E.Cowan Lawrence Berkeley National Laboratory USA 25Institute of Microelectronics of Barcelona National Center of Microelectronic Spanish Research Council Spain 26University of St. Andrews UK

A number of laser facilities coming online all over the world promise the capability of high-power laser experiments with shot repetition rates between 1 and 10 Hz. Target availability and technical issues related to the interaction environment could become a bottleneck for the exploitation of such facilities. In this paper, we report on target needs for three different classes of experiments: dynamic compression physics, electron transport and isochoric heating, and laser-driven particle and radiation sources. We also review some of the most challenging issues in target fabrication and high repetition rate operation. Finally, we discuss current target supply strategies and future perspectives to establish a sustainable target provision infrastructure for advanced laser facilities.

关键词： high-energy density physics target design and fabrication

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