M
Mykhaylo P. Semtsiv
Researcher at Humboldt University of Berlin
Publications - 114
Citations - 2097
Mykhaylo P. Semtsiv is an academic researcher from Humboldt University of Berlin. The author has contributed to research in topics: Laser & Quantum cascade laser. The author has an hindex of 20, co-authored 113 publications receiving 1709 citations. Previous affiliations of Mykhaylo P. Semtsiv include Humboldt State University.
Papers
More filters
Journal ArticleDOI
Mid-infrared optical properties of thin films of aluminum oxide, titanium dioxide, silicon dioxide, aluminum nitride, and silicon nitride
Jan Kischkat,Sven Peters,Bernd Gruska,Mykhaylo P. Semtsiv,Mikaela Chashnikova,Matthias Klinkmüller,O. Fedosenko,S. Machulik,A. Aleksandrova,Gregorii Monastyrskyi,Yuri V. Flores,W. Ted Masselink +11 more
TL;DR: The investigation shows how sensitive the refractive index functions are to the O2 and N2 flow rates, and for which growth conditions the materials deposit homogeneously, and allows conclusions to be drawn on the degree of amorphousness and roughness.
Journal ArticleDOI
Influence of tip-induced band bending on tunnelling spectra of semiconductor surfaces
TL;DR: In this paper, a theory based on the Bardeen formalism is developed for computing the tunnel current between a metal tip and a semiconductor surface, where tip-induced band bending in the semiconductor is included, with the electrostatic potential computed in a fully three-dimensional model whereas tunnel current is computed in the limit of large tip radii.
Journal ArticleDOI
Short-wavelength (λ≈3.05μm) InP-based strain-compensated quantum-cascade laser
TL;DR: In this article, a short-wavelength quantum-cascade laser based on the strain-compensated In0.73Ga0.27As−In0.55Al0.45As−AlAs heterosystem on InP is described.
Journal ArticleDOI
Iron doped InGaAs: Competitive THz emitters and detectors fabricated from the same photoconductor
Björn Globisch,Roman J. B. Dietz,Robert B. Kohlhaas,Thorsten Göbel,Martin Schell,D. Alcer,Mykhaylo P. Semtsiv,William Ted Masselink +7 more
TL;DR: In this article, a photoconductive emitters and detectors fabricated from molecular beam epitaxy (MBE) grown iron (Fe) doped InGaAs, which are well suited for a THz time-domain spectroscopy as both emitters, were presented.
Journal ArticleDOI
Above room temperature operation of short wavelength (λ=3.8μm) strain-compensated In0.73Ga0.27As–AlAs quantum-cascade lasers
Mykhaylo P. Semtsiv,Mathias Ziegler,S. Dressler,William Ted Masselink,Nikolai Georgiev,Thomas Dekorsy,Manfred Helm +6 more
TL;DR: In this paper, a broad-gain and low-threshold (Jth=860A∕cm2 at 8K) quantum-cascade laser emitting between 3.7 and 4.2μm was demonstrated.