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Journal Article

Real-time imaging of standing-wave patterns in microresonators

MPS-Authors
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Yan,  Haochen
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Ghosh,  Alekhya
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

/persons/resource/persons296901

Pal,  Arghadeep
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Zhang,  Hao
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons266464

Bi,  Toby
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

/persons/resource/persons266468

Ghalanos,  George N.
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Zhang,  Shuangyou
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons296909

Hill,  Lewis
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Zhang,  Yaojing
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Zhuang,  Yongyong
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

/persons/resource/persons60454

Del'Haye,  Pascal
Del'Haye Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Citation

Yan, H., Ghosh, A., Pal, A., Zhang, H., Bi, T., Ghalanos, G. N., et al. (2024). Real-time imaging of standing-wave patterns in microresonators. PNAS, 121(10): e2313981121. doi:10.1073/pnas.2313981121.


Cite as: https://hdl.handle.net/21.11116/0000-000E-A9D4-4
Abstract
Real-time characterization of microresonator dynamics is important for many applications. In particular, it is critical for near-field sensing and understanding light–matter interactions. Here, we report camera-facilitated imaging and analysis of standing wave patterns in optical ring resonators. The standing wave pattern is generated through bidirectional pumping of a microresonator, and the scattered light from the microresonator is collected by a short-wave infrared (SWIR) camera. The recorded scattering patterns are wavelength dependent, and the scattered intensity exhibits a linear relation with the circulating power within the microresonator. By modulating the relative phase between the two pump waves, we can control the generated standing waves’ movements and characterize the resonator with the SWIR camera. The visualized standing wave enables subwavelength distance measurements of scattering targets with nanometer-level accuracy. This work opens broad avenues for applications in on-chip near-field (bio)sensing, real-time characterization of photonic integrated circuits, and backscattering control in telecom systems.