Observation of SQUID‐Like Behavior in Fiber Laser with Intra‐Cavity Epsilon‐Near‐Zero Effect

Establishing relations between fundamental effects in far‐flung areas of physics is a subject of great interest in the current research. Realization of a novel photonic system akin to the radio‐frequency superconducting quantum interference device (RF‐SQUID), in a fiber laser cavity with epsilon‐nea...

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Bibliographic Details
Published in:Laser & photonics reviews 2022-12, Vol.16 (12), p.n/a
Main Authors: Wu, Jiaye, Liu, Xuanyi, Malomed, Boris A., Chang, Kuan‐Chang, Zhao, Minghe, Qi, Kang, Sha, Yanhua, Xie, Ze Tao, Clementi, Marco, Brès, Camille‐Sophie, Zhang, Shengdong, Fu, Hongyan, Li, Qian
Format: Article
Language:English
Subjects:
epsilon‐near‐zero
fiber laser
Fiber lasers
indium tin oxide
LC circuits
Mechanical systems
mode‐locking
nonlinear polarization evolution
Photonics
Superconducting quantum interference devices
Superconductivity
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Summary:Establishing relations between fundamental effects in far‐flung areas of physics is a subject of great interest in the current research. Realization of a novel photonic system akin to the radio‐frequency superconducting quantum interference device (RF‐SQUID), in a fiber laser cavity with epsilon‐near‐zero (ENZ) nanolayers as intra‐cavity components is reported here. Emulating the RF‐SQUID scheme, the photonic counterpart of the supercurrent, represented by the optical wave, circulates in the cavity, passing through effective optical potential barriers. Different ENZ wavelengths translate into distinct spectral outputs through the variation of cavity resonances, emulating the situation with a frequency‐varying tank circuit in the RF‐SQUID. Due to the presence of the ENZ element, the optical potential barrier is far lower for selected frequency components, granting them advantage in the gain‐resource competition. The findings reported in this work provide a deeper insight into the ultrafast ENZ photonics, revealing a new path toward the design of nanophotonic on‐chip devices with various operational functions, and offer a new approach to study superconducting and quantum‐mechanical systems. Establishing relations between fundamental effects in far‐flung areas of physics is an intriguing subject. The realization of a novel photonic system akin to the radio‐frequency superconducting quantum interference device (RF‐SQUID) is demonstrated, in a fiber laser cavity with epsilon‐near‐zero (ENZ) intra‐cavity components. Different ENZ wavelengths translate into distinct variation of cavity resonances, emulating the frequency‐varying tank circuit in the RF‐SQUID.
ISSN:1863-8880
1863-8899
DOI:10.1002/lpor.202200487