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The hollow core light cage: diffractionless propagation of light in "quasi-air" inside a 3D nano-printed on-chip hollow core device (Conference Presentation)
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Paper Abstract

Optical waveguides represent the key element of integrated planar photonic circuitry having revolutionized many fields of photonics ranging from telecommunications, medicine, environmental science and light generation. However, the use of solid cores imposes limitations on applications that demand controlling strong light-matter interaction within low permittivity media such as gases or liquids, which has triggered substantial interest towards the development of hollow core waveguides. Here, we introduce the concept of the on-chip hollow core light cage that consists of free standing arrays of cylindrical dielectric strands surrounding a central hollow core implemented by 3D nanoprinting. The cage operates by the anti-resonant guidance effect and exhibits extraordinary properties such as (1) diffraction-less propagation in “quasi-air” over more than a centimetre distance within the ultraviolet, visible and near-infrared spectral domains, (2) unique side-wise direct access to the hollow core via open spaces between the strands speeding up gas diffusion times by at least a factor of 10.000, and (3) an extraordinary high fraction of modal fields in the hollow section (> 99.9%). With these properties, the light cage can overcome the limitations of current planar hollow core waveguide technology, allowing unprecedented future on-chip applications within quantum technology, ultrafast spectroscopy, bioanalytics, acousto-optics, optofluidics and nonlinear optics.

Paper Details

Date Published: 4 March 2019
Proc. SPIE 10922, Smart Photonic and Optoelectronic Integrated Circuits XXI, 109220P (4 March 2019); doi: 10.1117/12.2511584
Show Author Affiliations
Markus A. Schmidt, Leibniz-Institut für Photonische Technologien e.V. (Germany)
Avi Braun, Imperial College London (United Kingdom)
Chhavi Jain, Leibniz-Institut für Photonische Technologien e.V. (Germany)
Julian Gargiulo, Imperial College London (United Kingdom)
Bumjoon Jang, Leibniz-Institut für Photonische Technologien e.V. (Germany)
Guangrui Li, Leibniz-Institut für Photonische Technologien e.V. (Germany)
Hartmut Lehmann, Leibniz-Institut für Photonische Technologien e.V. (Germany)
Stefan A. Maier, Imperial College London (United Kingdom)

Published in SPIE Proceedings Vol. 10922:
Smart Photonic and Optoelectronic Integrated Circuits XXI
Sailing He; El-Hang Lee, Editor(s)

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