260 citations · 486 across the 11 of their papers we have counts for
11 papers
Higher-harmonic generation in boron-doped silicon from band carriers and bound-dopant photoionization
Fanqi Meng, Frederik Walla, Sergey Kovalev +10
We investigate ultrafast harmonic generation (HG) in Si:B, driven by intense pump pulses with fields reaching ~100 kV/cm and a carrier frequency of 300 GHz, at 4 K and 300 K, both…
In-situ wavelength calibration without a calibration target: use of Fraunhofer lines after landing on planetary surface
Shoki Mori, Ute Boettger, Maximilian Buder +14
Accurate wavelength calibration is critical for qualitative and quantitative spectroscopic measurements. Many spectrometers for planetary exploration are equipped with onboard cali…
Thermal activation of valley-orbit states of neutral magnesium in silicon
Rohan Abraham, Valentina Shuman, Leonid Portsel +7
Interstitial magnesium acts as a moderately deep double donor in silicon, and is relatively easily introduced by diffusion. Unlike the case of the chalcogen double donors, the bind…
Resolving isotope splitting of boron-related intracenter transitions in diamond by infrared absorption spectroscopy
Dmitrii Prikhodko, Sergey Pavlov, Sergey Tarelkin +7
Isotopic enrichment offers cutting-edge properties of materials opening exciting research and development opportunities. In semiconductors, reached progress of ultimate control in…
A Mg-pair isoelectronic bound exciton identified by its isotopic fingerprint in Si
Rohan Abraham, Adam DeAbreu, Kevin Morse +9
We use the greatly improved optical linewidths provided by highly enriched Si to study a photoluminescence line near 1017 meV previously observed in the luminescence spectru…
Further investigations of the deep double donor magnesium in silicon
Rohan Abraham, Adam DeAbreu, Kevin Morse +9
The deep double donor levels of substitutional chalcogen impurities in silicon have unique optical properties which may enable a spin/photonic quantum technology. The interstitial…
First supra-THz Heterodyne Array Receivers for Astronomy with the SOFIA Observatory
Christophe Risacher, Rolf Guesten, Juergen Stutzki +15
We present the upGREAT THz heterodyne arrays for far-infrared astronomy. The Low Frequency Array (LFA) is designed to cover the 1.9-2.5 THz range using 2x7-pixel waveguide-based HE…
SOFIA observations of far-infrared hydroxyl emission toward classical ultracompact HII/OH maser regions
T. Csengeri, K. M. Menten, F. Wyrowski +6
The hydroxyl radical (OH) is found in various environments within the interstellar medium (ISM) of the Milky Way and external galaxies, mostly either in diffuse interstellar clouds…
GREAT: the SOFIA high-frequency heterodyne instrument
S. Heyminck, U. U. Graf, R. Güsten +3
We describe the design and construction of GREAT, the German REceiver for Astronomy at Terahertz frequencies operated on the Stratospheric Observatory for Infrared Astronomy (SOFIA…
Tantalum nitride superconducting single-photon detectors with low cut-off energy
Andreas Engel, Adrian Aeschbacher, Kevin Inderbitzin +6
Materials with a small superconducting energy gap are expected to favor a high detection efficiency of low-energy photons in superconducting nanowire single-photon detectors. We de…
Symbiotic Optimization of the Nanolithography and RF-Plasma Etching for Fabricating High-Quality Light-Sensitive Superconductors on the 50 nm Scale
H. Bartolf, K. Inderbitzin, L. B. Gómez +6
We present results of a fabrication-process development for the lithographic pattern transfer into the sub-100nm range by combining electron-beam lithography and reactive dry etchi…