Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Giles, Alexander J."'
Autor:
Kiessling, Riko, Tong, Yujin, Giles, Alexander J., Gewinner, Sandy, Schoellkopf, Wieland, Caldwell, Joshua D., Wolf, Martin, Paarmann, Alexander
We experimentally demonstrate long-wave infrared-visible sum-frequency generation microscopy for imaging polaritonic resonances of infrared (IR) nanophotonic structures. This nonlinear-optical approach provides direct access to the resonant field enh
Externí odkaz:
http://arxiv.org/abs/1905.12499
Strong Confinment of optical fields using localised surface phonon polaritons in cubic Boron Nitride
Autor:
Chatzakis, Ioannis, Krishna, Athith, Culbertson, James, Sharac, Nicholas, Giles, Alexander J., Spencer, Michael G., Caldwell, a nd Joshua D.
Publikováno v:
Optics Letters Vol. 43, Issue 9, pp. 2177-2180 (2018)
Phonon polaritons (PhPs) are long-lived electromagnetic modes that originate from the coupling of infrared photons with the bound ionic lattice of a polar crystal. Cubic-Boron nitride (cBN) is such a polar, semiconductor material, which due to the li
Externí odkaz:
http://arxiv.org/abs/1812.11146
Akademický článek
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Autor:
Gubbin, Christopher R., Berté, Rodrigo, Meeker, Michael A., Giles, Alexander J., Ellis, Chase T., Tischler, Joseph G., Wheeler, Virginia D., Caldwell, Joshua D., De Liberato, Simone
We demonstrate how to exploit long-cell polytypes of silicon carbide to achieve strong coupling between transverse phonon polaritons and zone folded longitudinal optical phonons. The resulting quasiparticles possess hybrid longitudinal and transverse
Externí odkaz:
http://arxiv.org/abs/1807.10903
Autor:
Ratchford, Daniel C., Winta, Christopher J., Chatzakis, Ioannis, Ellis, Chase T., Passler, Nikolai C., Winterstein, Jonathan, Dev, Pratibha, Razdolski, Ilya, Tischler, Joseph G., Vurgaftman, Igor, Katz, Michael B., Nepal, Neeraj, Hardy, Matthew T., Hachtel, Jordan A., Idrobo, Juan Carlos, Reinecke, Thomas L., Giles, Alexander J., Katzer, D. Scott, Bassim, Nabil D., Stroud, Rhonda M., Wolf, Martin, Paarmann, Alexander, Caldwell, Joshua D.
Surface phonon polaritons (SPhPs) - the surface-bound electromagnetic modes of a polar material resulting from the coupling of light with optic phonons - offer immense technological opportunities for nanophotonics in the infrared (IR) spectral region
Externí odkaz:
http://arxiv.org/abs/1806.06792
Autor:
Giles, Alexander J., Dai, Siyuan, Vurgaftman, Igor, Hoffman, Timothy, Liu, Song, Lindsay, Lucas, Ellis, Chase T., Assefa, Nathanael, Chatzakis, Ioannis, Reinecke, Thomas L., Tischler, Joseph G., Fogler, Michael M., Edgar, J. H., Basov, D. N., Caldwell, Joshua D.
Conventional optical components are limited to size-scales much larger than the wavelength of light, as changes in the amplitude, phase and polarization of the electromagnetic fields are accrued gradually along an optical path. However, advances in n
Externí odkaz:
http://arxiv.org/abs/1705.05971
Autor:
Dunkelberger, Adam D., Ellis, Chase T., Ratchford, Daniel C., Giles, Alexander J., Kim, Mijin, Kim, Chul Soo, Spann, Bryan T., Vurgaftman, Igor, Tischler, Joseph G., Long, James P., Glembocki, Orest J., Owrutsky, Jeffrey C., Caldwell, Joshua D.
Surface-phonon polaritons (SPhPs) are attractive alternatives to far-infrared plasmonics for sub-diffractional confinement of light. Localized SPhP resonances in semiconductor nanoresonators are very narrow, but that linewidth and the limited extent
Externí odkaz:
http://arxiv.org/abs/1705.05980
Autor:
Razdolski, Ilya, Chen, Yiguo, Giles, Alexander J., Gewinner, Sandy, Schöllkopf, Wieland, Hong, Minghui, Wolf, Martin, Giannini, Vincenzo, Caldwell, Joshua D., Maier, Stefan A., Paarmann, Alexander
Publikováno v:
Nano Lett., 2016, 16 (11), pp 6954-6959
We report on strong enhancement of mid-infrared second harmonic generation (SHG) from SiC nanopillars due to the resonant excitation of localized surface phonon-polaritons within the Reststrahlen band. The magnitude of the SHG peak at the monopole mo
Externí odkaz:
http://arxiv.org/abs/1607.05158
Imaging of anomalous internal reflections of hyperbolic phonon-polaritons in hexagonal boron nitride
Autor:
Giles, Alexander J, Dai, Siyuan, Glembocki, Orest J, Kretinin, Andrey V, Sun, Zhiyuan, Ellis, Chase T, Tischler, Joseph G, Taniguchi, Takashi, Watanabe, Kenji, Fogler, Michael M, Novoselov, Kostya S, Basov, Dimitri N, Caldwell, Joshua D
We use scanning near-field optical microscopy to study the response of hexagonal boron nitride nanocones at infrared frequencies, where this material behaves as a hyperbolic medium. The obtained images are dominated by a series of hot rings that occu
Externí odkaz:
http://arxiv.org/abs/1604.07251
Autor:
Spann, Bryan T., Compton, Ryan, Ratchford, Daniel, Long, James P., Dunkelberger, Adam D., Klein, Paul B., Giles, Alexander J., Caldwell, Joshua D., Owrutsky, Jeffrey C.
Publikováno v:
Phys. Rev. B 93, 085205 (2016)
Materials with a negative dielectric permittivity (e.g. metals) display high reflectance and can be shaped into nanoscale optical-resonators exhibiting extreme mode confinement, a central theme of nanophotonics. However, the ability to $actively$ tun
Externí odkaz:
http://arxiv.org/abs/1511.09428