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Fabrication and characterization of a three-dimensional core-shell photonic-crystal lattice capable of negative refraction in the mid-infrared (Conference Presentation)

Chernow, Victoria F. and Ng, Ryan C. and Peng, Siying and Greer, Julia R. (2018) Fabrication and characterization of a three-dimensional core-shell photonic-crystal lattice capable of negative refraction in the mid-infrared (Conference Presentation). In: Photonic and Phononic Properties of Engineered Nanostructures VIII. Proceedings of SPIE. No.10541. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 105410N. ISBN 9781510615670. https://resolver.caltech.edu/CaltechAUTHORS:20190827-112057275

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Abstract

Interest in negative refraction has been motivated by the possibility of creating a “superlens” as proposed by Pendry (Phys. Rev. Lett. 85, 3966 (2000)). This theoretical work showed that a material capable of negative refraction amplifies evanescent waves and allows this material to act as a lens with a resolution not limited by working wavelength. Although theory and some experiments have shown that certain metamaterials and photonic crystals (PhCs) can act as superlenses, realistic demonstration of negative refraction in the optical and infrared range remains a challenge. This is because most metamaterials employ lossy metal elements and most PhC structures found to exhibit negative refraction are made of positive index dielectric materials and are two-dimensional. Subwavelength imaging of a 3D object requires a 3D PhC capable of negative refraction. Inspired by the numerical simulations of Luo, et. al. (Appl. Phys. Lett. 81, 2352 (2002)), we demonstrate the fabrication and characterization of a 500nm-diameter polymer core, 250nm-thick Germanium shell 3D photonic crystal lattice that exhibits negative refraction in the mid-infrared, centered around 8µm. This 3D photonic crystal resembles a BCC lattice of air cubes in dielectric media and was fabricated using two-photon lithography direct laser writing of an acrylic polymer resin scaffold followed by RF sputtering of Ge. The band structure of the lattice was mapped using FTIR spectroscopy reflectance measurements, and negative refraction was observed using far-field IR transmission imaging.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2290697DOIVideo
ORCID:
AuthorORCID
Ng, Ryan C.0000-0002-0527-9130
Peng, Siying0000-0002-1541-0278
Greer, Julia R.0000-0002-9675-1508
Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:10541
Record Number:CaltechAUTHORS:20190827-112057275
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190827-112057275
Official Citation:Victoria F. Chernow, Ryan C. Ng, Siying Peng, and Julia R. Greer "Fabrication and characterization of a three-dimensional core-shell photonic-crystal lattice capable of negative refraction in the mid-infrared (Conference Presentation)", Proc. SPIE 10541, Photonic and Phononic Properties of Engineered Nanostructures VIII, 105410N (14 March 2018); https://doi.org/10.1117/12.2290697
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98272
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Aug 2019 18:31
Last Modified:03 Oct 2019 21:39

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