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Douglas J. Paul
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Journal Articles

Silicon nitride waveguide polarization rotator and polarization beam splitter for chip-scale atomic systems

Kevin Gallacher, Paul F. Griffin, Erling Riis, Marc Sorel, Douglas J. Paul
Journal: APL Photonics
APL Photonics 7, 046101 (2022)
https://doi.org/10.1063/5.0077738
Published: April 2022
View article titled, Silicon nitride waveguide polarization rotator and polarization beam splitter for chip-scale atomic systems
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Includes: Supplementary data
Journal Articles

THz intersubband electroluminescence from n-type Ge/SiGe quantum cascade structures

Editor’s Pick
David Stark, Muhammad Mirza, Luca Persichetti, Michele Montanari, Sergej Markmann, Mattias Beck, Thomas Grange, Stefan Birner, Michele Virgilio, Chiara Ciano, Michele Ortolani, Cedric Corley, Giovanni Capellini, Luciana Di Gaspare, Monica De Seta, Douglas J. Paul, Jérôme Faist, Giacomo Scalari
Journal: Applied Physics Letters
Appl. Phys. Lett. 118, 101101 (2021)
https://doi.org/10.1063/5.0041327
Published: March 2021
View article titled, THz intersubband electroluminescence from n-type Ge/SiGe quantum cascade structures
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Includes: Supplementary data
Journal Articles

Ultra-broadband mid-infrared Ge-on-Si waveguide polarization rotator

Editor’s Pick
Kevin Gallacher, Ross W. Millar, Ugne Griškevičiūtė, Martin Sinclair, Marc Sorel, Leonetta Baldassarre, Michele Ortolani, Richard Soref, Douglas J. Paul
Journal: APL Photonics
APL Photonics 5, 026102 (2020)
https://doi.org/10.1063/1.5134973
Published: February 2020
View article titled, Ultra-broadband mid-infrared Ge-on-Si waveguide polarization rotator
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Includes: Supplementary data
Journal Articles

Strain analysis of a Ge micro disk using precession electron diffraction

Aneeqa Bashir, Ross W. Millar, Kevin Gallacher, Douglas J. Paul, Amith D. Darbal, Robert Stroud, Andrea Ballabio, Jacopo Frigerio, Giovanni Isella, Ian MacLaren
Journal: Journal of Applied Physics
J. Appl. Phys. 126, 235701 (2019)
https://doi.org/10.1063/1.5113761
Published: December 2019
View article titled, Strain analysis of a Ge micro disk using precession electron diffraction
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Includes: Supplementary data
Journal Articles

Room temperature operation of n-type Ge/SiGe terahertz quantum cascade lasers predicted by non-equilibrium Green's functions

Thomas Grange, David Stark, Giacomo Scalari, Jérôme Faist, Luca Persichetti, Luciana Di Gaspare, Monica De Seta, Michele Ortolani, Douglas J. Paul, Giovanni Capellini, Stefan Birner, Michele Virgilio
Journal: Applied Physics Letters
Appl. Phys. Lett. 114, 111102 (2019)
https://doi.org/10.1063/1.5082172
Published: March 2019
View article titled, Room temperature operation of <em>n</em>-type Ge/SiGe terahertz quantum cascade lasers predicted by non-equilibrium Green's functions
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Includes: Supplementary data
Journal Articles

Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates

Fabio Pezzoli, Anna Giorgioni, Kevin Gallacher, Fabio Isa, Paolo Biagioni, Ross W. Millar, Eleonora Gatti, Emanuele Grilli, Emiliano Bonera, Giovanni Isella, Douglas J. Paul, Leo Miglio
Journal: Applied Physics Letters
Appl. Phys. Lett. 108, 262103 (2016)
https://doi.org/10.1063/1.4955020
Published: June 2016
View article titled, Disentangling nonradiative recombination processes in Ge micro-crystals on Si substrates
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Journal Articles

Nanofabrication of high aspect ratio (∼50:1) sub-10 nm silicon nanowires using inductively coupled plasma etching

Muhammad M. Mirza, Haiping Zhou, Philippe Velha, Xu Li, Kevin E. Docherty, Antonio Samarelli, Gary Ternent, Douglas J. Paul
Journal: Journal of Vacuum Science & Technology B
J. Vac. Sci. Technol. B 30, 06FF02 (2012)
https://doi.org/10.1116/1.4755835
Published: September 2012
View article titled, Nanofabrication of high aspect ratio (∼50:1) sub-10 nm silicon nanowires using inductively coupled plasma etching
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Journal Articles

A study of the impact of dislocations on the thermoelectric properties of quantum wells in the Si/SiGe materials system

Jeremy R. Watling, Douglas J. Paul
Journal: Journal of Applied Physics
J. Appl. Phys. 110, 114508 (2011)
https://doi.org/10.1063/1.3665127
Published: December 2011
View article titled, A study of the impact of dislocations on the thermoelectric properties of quantum wells in the Si/SiGe materials system
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Journal Articles

Determination of complex refractive index of thin metal films from terahertz time-domain spectroscopy

Da-xiang Zhou, E. P. J. Parrott, Douglas J. Paul, J. Axel Zeitler
Journal: Journal of Applied Physics
J. Appl. Phys. 104, 053110 (2008)
https://doi.org/10.1063/1.2970161
Published: September 2008
View article titled, Determination of complex refractive index of thin metal films from terahertz time-domain spectroscopy
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Journal Articles

Electron beam induced damage of silicon germanium

Douglas J. Paul, Joseph M. Ryan, Michael Pepper, Alec N. Broers, Terry E. Whall, Juan M. Fernández, Bruce A. Joyce
Journal: Journal of Vacuum Science & Technology B
J. Vac. Sci. Technol. B 14, 3834–3838 (1996)
https://doi.org/10.1116/1.588677
Published: November 1996
View article titled, Electron beam induced damage of silicon germanium
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