Switchable polarization rotation of visible light using a plasmonic metasurface

Autor: Stuart K. Earl, Timothy D. James, Daniel E. Gómez, Robert E. Marvel, Richard F. Haglund Jr., Ann Roberts

Publikováno v: APL Photonics, Vol 2, Iss 1, Pp 016103-016103-8 (2017)

A metasurface comprising an array of silver nanorods supported by a thin film of the phase change material vanadium dioxide is used to rotate the primary polarization axis of visible light at a pre-determined wavelength. The dimensions of the rods we

Externí odkaz: https://doaj.org/article/33147700c5f1447eacee3b771765100a

Broadband, Integrated, Micron-Scale, All-Optical Si3N4/VO2 Modulators with pJ Switching Energy

Autor: Rohit P. Prasankumar, Richard F. Haglund, Kent A. Hallman, Zhizhong Yan, Amr S. Helmy, Herman M. K. Wong, Robert E. Marvel

Publikováno v: ACS Photonics. 6:2734-2740

The expansion of optical network traffic demands the implementation of all-optical signal processing functions such as switching and modulation within the network nodes to scale data speeds and curb power consumption. Toward this end, we experimental

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ec155b86075c60bcb55774aa8703529
https://doi.org/10.1021/acsphotonics.9b00708

Correction to 'Imaging Nanometer Phase Coexistence at Defects During the Insulator–Metal Phase Transformation in VO2 Thin Films by Resonant Soft X-ray Holography'

Autor: Luciana Vidas, Christian M. Günther, Timothy A. Miller, Bastian Pfau, Daniel Perez-Salinas, Elías Martínez, Michael Schneider, Erik Gührs, Pierluigi Gargiani, Manuel Valvidares, Robert E. Marvel, Kent A. Hallman, Richard F. Haglund, Stefan Eisebitt, Simon Wall

Publikováno v: Vidas, L, Günther, C M, Miller, T A, Pfau, B, Perez-Salinas, D, Martínez, E, Schneider, M, Gührs, E, Gargiani, P, Valvidares, M, Marvel, R E, Hallman, K A, Haglund, R F, Eisebitt, S & Wall, S 2021, ' Correction to "Imaging Nanometer Phase Coexistence at Defects During the Insulator-Metal Phase Transformation in VO 2 Thin Films by Resonant Soft X-ray Holography" ', Nano Letters, vol. 21, no. 17, pp. 7426-7426 . https://doi.org/10.1021/acs.nanolett.1c03109

In our original Letter, we used spectral holography to identify the growth of metallic domains in insulating VO2. In this work, we identified three phases based on spectroscopy: M1, M2, and R. However, spectroscopy based on the holographic method, as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9e3ce0c424f042648c17b1123309623
https://doi.org/10.1021/acs.nanolett.1c03109

Optical pump – THz probe response of VO2 under high pressure

Autor: Manfred Helm, Robert E. Marvel, Rafał Mirek, Johannes M. Braun, Lynn A. Boatner, Richard F. Haglund, Harald Schneider, Alexej Pashkin

Publikováno v: EPJ Web of Conferences, Vol 205, p 04003 (2019)

We present the ultrafast THz response of VO2 under high pressures. A clear anomaly is observed around 8 GPa indicating a pressure-induced phase transition. Our observations can be interpreted in terms of a bandwidth-controlled Mott-Hubbard transition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d9cc99812298433a88456b7fee06c79
https://www.epj-conferences.org/articles/epjconf/pdf/2019/10/epjconf_up2019_04003.pdf

Imaging Nanometer Phase Coexistence at Defects During the Insulator–Metal Phase Transformation in VO 2 Thin Films by Resonant Soft X-ray Holography

Autor: Robert E. Marvel, Luciana Vidas, Stefan Eisebitt, Elías Martínez, Richard F. Haglund, Timothy A. Miller, Pierluigi Gargiani, Michael Schneider, Simon Wall, Kent A. Hallman, Manuel Valvidares, Christian M. Günther, Erik Gührs, Bastian Pfau, Daniel Perez-Salinas

Publikováno v: Nano Letters
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
instname

We use resonant soft X-ray holography to image the insulator−metal phase transition in vanadium dioxide with element and polarization specificity and nanometer spatial resolution. We observe that nanoscale inhomogeneity in the film results in spati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::917ec33c086ccac0caa09a8fbd89967a