High-speed switching of far-infrared radiation by photoionization in a semiconductor
- 20 January 1992
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 31 (3) , 329-337
- https://doi.org/10.1364/ao.31.000329
Abstract
An investigation of subnanosecond switching of 119-μm radiation achieved by irradiating high-resistivity silicon wafers with 1.7-ns, 337-nm pulses from a nitrogen laser is presented. The experimental results are compared with a one-dimensional numerical multilayer model, which accounts for the generation, recombination, and diffusion of the free carriers and the resulting change of the far-infrared optical properties of the Si wafer.Keywords
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