Abstract

We present a coherent all-optical transistor using an ultra-thin absorber layer in a photonic crystal. We investigate the influence of an ultra-short pulse as the gate on a much stronger pump beam. Amplification of the pump beam becomes possible by interference of two counter-propagating lights in position of the absorber thin film. It is shown that the designed photonic crystal with capability of being integrable has a gain of more than 2.5, which can support the input of two similar transistors. This system with high stability and very low delay can switch with frequencies in the terahertz range.

© 2016 Optical Society of America

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