Zobrazeno 1 - 10
of 109
pro vyhledávání: '"A. Beck"'
Autor:
Monica De Seta, Michele Montanari, Luca Persichetti, Thomas Grange, Mattias Beck, G. Scalari, David Stark, Michele Virgilio, Sergej Markmann, Chiara Ciano, Jérôme Faist, Stefan Birner, Muhammad M. Mirza, Luciana Di Gaspare, Cedric Corley, Douglas J. Paul, Giovanni Capellini, Michele Ortolani
Publikováno v:
Applied Physics Letters
Applied Physics Letters, 118 (10)
Applied Physics Letters, 118 (10)
© 2021 Author(s). We report electroluminescence originating from L-valley transitions in n-type Ge/Si0.15Ge0.85 quantum cascade structures centered at 3.4 and 4.9 THz with a line broadening of Δ f / f ≈ 0.2. Three strain-compensated heterostructu
Publikováno v:
Applied Physics Letters. 119:263501
Publikováno v:
Applied Physics Letters. 119:252103
Autor:
Siva Krishna Karuturi, Kylie R. Catchpole, Astha Sharma, Fiona J. Beck, Doudou Zhang, Aswani Gopakumar Saraswathyvilasam, Joshua D. Butson, Wensheng Liang
Publikováno v:
Applied Physics Letters. 119:193901
HfO2 has many favorable characteristics for use in energy conversion devices including high thermodynamic stability, good chemical stability in corrosive electrolytes, high refractive index, and wide bandgap. Here, we report surface passivation of a
Autor:
Alla S. Sologubenko, Marco Volpi, Sophie Beck, Ralph Spolenak, Henning Galinski, Alexander Hampel
Publikováno v:
Applied Physics Letters. 119:151602
Intentional breaking of the lattice symmetry in solids is a key concept to alter the properties of materials by modifying their electronic band structure. However, the correlation of strain-induced effects and breaking of the lattice symmetry is ofte
Publikováno v:
Applied Physics Letters, 118 (13)
Harmonic comb state has proven to be emerging in quantum cascade lasers and promoted by an interplay between parametric gain and spatial hole burning. We report here on robust, pure, self-starting harmonic mode locking in Copper-based double-metal TH
Atomic-level charge transport mechanism in gate-tunable anti-ambipolar van der Waals heterojunctions
Autor:
Mark C. Hersam, Vinod K. Sangwan, James Charles, Alex Henning, Megan E. Beck, Lincoln J. Lauhon, Kuang-Chung Wang, Daniel Valencia, Tillmann Kubis
Publikováno v:
Applied Physics Letters. 118:083103
van der Waals p–n heterojunctions using both 2D–2D and mixed-dimensional systems have shown anti-ambipolar behavior. Gate tunability in anti-ambipolar characteristics is obtained in special heterojunction geometries, such as self-aligned black ph
Autor:
Senica, U., Mavrona, E., Olariu, T., Forrer, A., Shahmohammadi, M., Beck, M., Faist, J., Scalari, G.
Publikováno v:
Applied Physics Letters
We present an antipodal Vivaldi antenna for broadband double metal waveguide terahertz quantum cascade lasers and frequency combs. Its exponentially curved flare profile results in an adiabatic in-plane mode expansion, producing an improved far-field
Autor:
Ningren Han, Jérôme Faist, Nathan Henry, Mattias Beck, Filippos Kapsalidis, Qing Hu, David Burghoff, Jacob B. Khurgin
Publikováno v:
Applied Physics Letters. 115:021105
Chip-scale frequency combs such as those based on quantum cascade lasers (QCLs) or microresonators are attracting tremendous attention because of their potential to solve key challenges in sensing and metrology. Though nonlinearity and proper dispers
Autor:
Stefan P. Svensson, Gregory Belenky, Sergey Suchalkin, W. A. Beck, D. Donetsky, Wendy L. Sarney
Publikováno v:
Applied Physics Letters. 114:122102
InAsSb is the only direct-bandgap III–V compound semiconductor alloy that absorbs and emits light over the entire long-wavelength infrared band (8–12 micron). We measured its free electron concentration and mobility as a function of temperature i