Low-loss infrared ultrawide type-II hyperbolic metamaterials based on III-V semiconductors

Ethan Caudill; Christopher Cailide; Michael Lloyd; John Murphy; Kiernan Arledge; Tetsuya Mishima; Jill Nolde; Jesse Frantz; Chase Ellis; Priyantha Weerasinghe; Terry Golding; Michael B. Santos; Joseph Tischler

doi:10.1117/12.3003296

9 March 2024 Low-loss infrared ultrawide type-II hyperbolic metamaterials based on III-V semiconductors

Ethan Caudill, Christopher Cailide, Michael Lloyd, John Murphy, Kiernan Arledge, Tetsuya Mishima, Jill Nolde, Jesse Frantz, Chase Ellis, Priyantha Weerasinghe, Terry Golding, Michael B. Santos, Joseph Tischler

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Proceedings Volume PC12895, Quantum Sensing and Nano Electronics and Photonics XX; PC128950J (2024) https://doi.org/10.1117/12.3003296
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We have implemented a hyperbolic metamaterial covering a spectral bandwidth of 2000 inverse cm for wavelengths above 4.7 µm. A stack of intercalated heavily-doped InAs and undoped InAs epilayers was grown by molecular beam epitaxy with tellurium as the n-type dopant for obtaining electron concentrations of ~8e19 per cubic cm. The Type II hyperbolicity was determined through the effective optical constants deduced from infrared ellipsometry measurements of the stacks. The materials were then dry etched to form ID gratings with features ranging from 1 to 5 µm. The effective optical constants were used to model the grating’s optical response by finite element electromagnetic calculations. The models showed the formation of hyperbolic plasmon polaritons at the same frequencies where experimental features were observed. This material is based upon work supported by the Office of the Undersecretary of Defense for Research and Engineering Basic Research Office STTR under Contract No. W911NF-21-P-0024. Disclaimer: The content of the information does not necessarily reflect the position or the policy of the Government, and no official endorsement should be inferred.

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Ethan Caudill, Christopher Cailide, Michael Lloyd, John Murphy, Kiernan Arledge, Tetsuya Mishima, Jill Nolde, Jesse Frantz, Chase Ellis, Priyantha Weerasinghe, Terry Golding, Michael B. Santos, and Joseph Tischler "Low-loss infrared ultrawide type-II hyperbolic metamaterials based on III-V semiconductors", Proc. SPIE PC12895, Quantum Sensing and Nano Electronics and Photonics XX, PC128950J (9 March 2024); https://doi.org/10.1117/12.3003296

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KEYWORDS

Infrared radiation

Hyperbolic metamaterials

Group III-V semiconductors

Indium arsenide

Polaritons

Phonons

Photodetectors

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