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arXiv · 1904.13005

Exceptional points-based optical amplifiers

Q. Zhong·S. K. Ozdemir·A. Eisfeld·A. Metelmann·R. El-Ganainy
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Abstract

The finite gain-bandwidth product is a fundamental figure of merit that restricts the operation of standard optical amplifiers. In microcavity setups, this becomes a serious problem due to the narrow bandwidth of the device. Here we introduce a new design paradigm based on exceptional points, that relaxes this limitation and allows for building a new generation of optical amplifiers that exhibits better gain-bandwidth scaling relations. Importantly, our results can be extended to other physical systems such as acoustics and microwaves.

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Q. Zhong, S. K. Ozdemir, A. Eisfeld, A. Metelmann, R. El-Ganainy. 2019-04-30. Exceptional points-based optical amplifiers. https://doi.org/10.1103/physrevapplied.13.014070

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