Optically Addressable Array of Optomechanically Compliant Glass Nanospikes on 
the Endface of a Soft-Glass Photonic Crystal Fiber

Wang, Zheqi; Xie, Shangran; Jiang, Xin; Babic, Fehim; Huang, Jiapeng; Pennetta, Riccardo; Köhler, Johannes; Russell, Philip

doi:10.1021/acsphotonics.9b01088

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Optically Addressable Array of Optomechanically Compliant Glass Nanospikes on the Endface of a Soft-Glass Photonic Crystal Fiber

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Wang, Zheqi
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Xie, Shangran
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

Jiang, Xin
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
Fibre Fabrication and Glass Studio, Technology Development and Service Units, Max Planck Institute for the Science of Light, Max Planck Society;

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Babic, Fehim
Fibre Fabrication and Glass Studio, Technology Development and Service Units, Max Planck Institute for the Science of Light, Max Planck Society;

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Huang, Jiapeng
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Pennetta, Riccardo
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Köhler, Johannes
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Russell, Philip
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
Department of Physics, Friedrich Alexander University Erlangen-Nuremberg;

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Citation

Wang, Z., Xie, S., Jiang, X., Babic, F., Huang, J., Pennetta, R., et al. (2019). Optically Addressable Array of Optomechanically Compliant Glass Nanospikes on the Endface of a Soft-Glass Photonic Crystal Fiber. ACS Photonics, 6(11), 2942-2948. doi:10.1021/acsphotonics.9b01088.

Cite as: https://hdl.handle.net/21.11116/0000-0005-3B5E-1

Abstract

Arrays of elongated nanoscale structures with suitable optical and mechanical properties can act as probes of numerous physical processes at the nanoscale, with applications in, for example, high-resolution optical imaging and atomic force microscopy. They can also be used to investigate optomechanical phenomena such as synchronization among large assemblies of mechanical oscillators. Here we report a novel and versatile technique for fabricating two-dimensional light-guiding arrays of mechanically compliant glass nanospikes with lengths up to several hundred micrometers. The procedure starts with a multicore fiber made by stacking and drawing capillaries and rods of two different germanate glasses with markedly different acid etching rates. After a suitable etching step, a free-standing nanospike array is created at the fiber endface. The parameters are chosen so that there is evanescent coupling between adjacent nanospikes, which gives rise to strong optomechanical forces that can be exploited to drive and control the mechanical motion of the nanospikes and thus the optical properties.