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physica status solidi (b), ISSN 0370-1972, 04/2016, Volume 253, Issue 4, pp. 613 - 622
Journal Article
Microelectronic Engineering, ISSN 0167-9317, 06/2017, Volume 177, p. A1
Journal Article
Nature Communications, ISSN 2041-1723, 06/2014, Volume 5, Issue 1, pp. 4085 - 4085
The increasing demand of rapid sensing and diagnosis in remote areas requires the development of compact and cost-effective mid-infrared sensing devices. So... 
SILICON-NITRIDE | PB | CONSTANTS | FILMS | SPECTROSCOPY | PHOTONICS | LASER | MULTIDISCIPLINARY SCIENCES | OPTICAL-PROPERTIES | BAND | NI | Optical Devices | Surface Plasmon Resonance - instrumentation | Spectrophotometry, Infrared | Light | Spectroscopy, Fourier Transform Infrared - instrumentation | Miniaturization | Equipment Design | Index Medicus
Journal Article
Nature Photonics, ISSN 1749-4885, 02/2019, Volume 13, Issue 2, pp. 101 - 104
Quantum cascade laser (QCL) frequency combs are a promising candidate for chemical sensing and biomedical diagnostics(1-4). They are electrically pumped and... 
SPECTROSCOPY | PHYSICS, APPLIED | OPTICS | Spectroscopy | Frequency locking | Chemical perception | Chemoreception | Injection | Infrared spectra | Quantum cascade lasers | Organic chemistry | Optical feedback | Feedback | Infrared spectrometers | Spectrometers | Optical properties | Frequency stabilization
Journal Article
physica status solidi (b), ISSN 0370-1972, 04/2016, Volume 253, Issue 4, pp. 613 - 622
Semiconductor heterostructures are well characterized experimentally and provide a solid basis for electronic and optoelectronic devices ranging from single... 
III–V semiconductors | interfaces | roughness | superlattices | atomistic modeling | Interfaces | Atomistic modeling | Superlattices | Roughness | III-V semiconductors | PHYSICS, CONDENSED MATTER | NOBEL LECTURE | POTENTIALS | Multilayers | Semiconductors | Energy conservation | Solid state physics | Electronics | Mathematical models | Heterostructures | Strain
Journal Article
Journal Article
AIP Advances, ISSN 2158-3226, 03/2017, Volume 7, Issue 3, pp. 35113 - 035113-5
We grew wafer-scale, uniform nanolayers of gallium telluride (GaTe) on gallium arsenide (GaAs) substrates using molecular beam epitaxy. These films initially... 
NANOSCIENCE & NANOTECHNOLOGY | PHYSICS, APPLIED | GASE | MATERIALS SCIENCE, MULTIDISCIPLINARY | TELLURIDE | Tellurides | Intermetallic compounds | Gallium arsenide | X-ray diffraction | Crystallinity | Raman spectroscopy | Substrates | Thickness | Molecular beam epitaxy | Epitaxial growth | X ray spectra | Residual stress | Crystal structure | Arsenides
Journal Article
Scientific Reports, ISSN 2045-2322, 02/2016, Volume 6, Issue 1, pp. 21795 - 21795
We present a bi-functional surface emitting and surface detecting mid-infrared device applicable for gas-sensing. A distributed feedback ring quantum cascade... 
SENSOR | CW DFB-QCL | PHOTODETECTORS | SPECTROSCOPY | LASER | MULTIDISCIPLINARY SCIENCES | Integration | Feedback | Lasers | Propane | Index Medicus
Journal Article
physica status solidi (b), ISSN 0370-1972, 05/2019, Volume 256, Issue 5, pp. 1800368 - n/a
The electrical properties of GaAs grown under B flux were investigated using 2‐ and 4‐point and back‐gated field‐effect transistor measurements. The results... 
boron doping | molecular beam epitaxy | nanowires | B:GaAs | PHYSICS, CONDENSED MATTER | BGAAS | Gallium arsenide | Analysis | Electric properties
Journal Article
Scientific Reports, ISSN 2045-2322, 12/2018, Volume 8, Issue 1, pp. 7998 - 6
We demonstrate the on-chip generation of twisted light beams from ring quantum cascade lasers. A monolithic gradient index metamaterial is fabricated directly... 
Semiconductors | Lasers
Journal Article
Applied Physics Letters, ISSN 0003-6951, 2014, Volume 104, Issue 5, p. 51101
Journal Article
Applied Physics Letters, ISSN 0003-6951, 12/2013, Volume 103, Issue 24, p. 241103
In this Letter, we demonstrate the design, fabrication, and characterization of a photonic crystal slab quantum cascade detector (PCS-QCD). By employing a... 
PHOTODETECTORS | PHYSICS, APPLIED | LASER | Photoelectric effect | Photocurrent | Incident light | Quantum wells | Photometers | Photonic crystals | Quantum chromodynamics | QUANTUM WELLS | INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY | DESIGN | PHOTONS | CRYSTALS | FABRICATION | SLABS | VISIBLE RADIATION
Journal Article
Applied Physics Letters, ISSN 0003-6951, 05/2019, Volume 114, Issue 19, p. 191104
The mode formation of a terahertz Quantum Cascade laser with two optical transitions is studied experimentally. The emission spectrum shows two well separated... 
Journal Article
Scientific Reports, ISSN 2045-2322, 11/2015, Volume 5, Issue 1, p. 16668
We introduce ring lasers with continuous pi-phase shifts in the second order distributed feedback grating. This configuration facilitates insights into the... 
DISTRIBUTED-FEEDBACK LASERS | SEMICONDUCTOR | EMISSION | RESONATORS | QUANTUM-CASCADE LASERS | MULTIDISCIPLINARY SCIENCES | Feedback | Lasers
Journal Article
IEEE Journal of Selected Topics in Quantum Electronics, ISSN 1077-260X, 11/2015, Volume 21, Issue 6, pp. 780 - 791
Journal Article
Applied Physics Letters, ISSN 0003-6951, 2014, Volume 104, Issue 15, p. 151105
We report on collimated emission beams from substrate emitting ring quantum cascade lasers with an on-chip focusing element fabricated into the bottom side of... 
LENS | PHYSICS, APPLIED | Luminous intensity | Fourier transformation | Far fields | Collimation | Metamaterials | Laser beams | Quantum cascade lasers | Substrates | INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY | EQUIPMENT | LASERS | SUBSTRATES | INFRARED RADIATION | ETCHING | FOCUSING | ENGINEERING
Journal Article
Light: Science and Applications, ISSN 2095-5545, 09/2016, Volume 5, Issue 9, pp. e16147 - e16147
We directly measure optical bound states in the continuum (BICs) by embedding a photodetector into a photonic crystal slab. The BICs observed in our experiment... 
Photodetector | Photonic crystals | Embedded eigenvalues | LASERS | LIGHT | SLABS | photodetector | MODES | WAVE-GUIDES | WELL INFRARED PHOTODETECTORS | embedded eigenvalues | photonic crystals | OPTICS | EMISSION | POLARIZATION | RADIATION CONTINUUM | Optical properties | Measurement techniques | Crystals
Journal Article
Microelectronic Engineering, ISSN 0167-9317, 06/2017, Volume 177, pp. A1 - A1
Journal Article
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