Exceptional-Point-Based Optical Amplifiers
Exceptional-Point-Based Optical Amplifiers
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DOI：
10.1103/physrevapplied.13.014070
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发表时间：
2019-04
影响因子：
4.6
通讯作者：
Q. Zhong;S. Ozdemir;A. Eisfeld;A. Metelmann;R. El-Ganainy
中科院分区：
文献类型：
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作者：
Q. Zhong;S. Ozdemir;A. Eisfeld;A. Metelmann;R. El-Ganainy
有限的增益带宽积是限制标准光放大器工作的基本品质因数。在微腔设置中，由于器件的窄带宽，这成为一个严重的问题。在这里，我们介绍了一个新的设计范例的基础上例外点，放宽这一限制，并允许建立新一代的光放大器，表现出更好的增益带宽缩放关系。重要的是，我们的结果可以扩展到其他物理系统，如声学和微波。
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.