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|Title:||Leaky wave radiation of millimetre waves by photoinduced plasma grating in a semiconductor slab|
|Authors:||Alphones, A. |
|Citation:||Alphones, A., Tsutsumi, M. (1999). Leaky wave radiation of millimetre waves by photoinduced plasma grating in a semiconductor slab. IEE Proceedings: Microwaves, Antennas and Propagation 146 (1) : 77-83. ScholarBank@NUS Repository. https://doi.org/10.1049/ip-map:19990141|
|Abstract:||The paper reports investigations on leaky wave radiation of millimetre waves from a periodically photoinduced semiconductor slab waveguide. The photoinduced plasma grating structure is modelled as a permittivity modulated layer by considering the average permittivity as of a uniform plasma occupied thin layer and is systematically analyzed using a singular perturbation procedure based on multiple space scales up to second order. The radiation efficiency of a leaky wave is derived and the results are outlined as a function of optically induced plasma density. Experiments have been carried out at 40 GHz by illuminating the grounded silicon slab using the slide of a periodic slit pattern through a xenon arc lamp. The dependence of periodicity on the radiation pattern is also reported.|
|Source Title:||IEE Proceedings: Microwaves, Antennas and Propagation|
|Appears in Collections:||Staff Publications|
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