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MOVPE Growth of Smooth and Homogeneous Al0.8Ga0.2N:Si Superlattices as UVC Laser Cladding Layers
/en/research/publications/movpe-growth-of-smooth-and-homogeneous-al08ga02nsi-superlattices-as-uvc-laser-cladding-layers
Smooth, uniform and conductive AlxGa1-xN layers with high aluminum mole fractions of x > 0.7 are required as cladding layers for laser diodes emitting in the deep ultraviolet spectral…
High power Y-branch MOPA-system with 9.7 nm wavelength tunability for IR up-conversion detection
/en/research/publications/high-power-y-branch-mopa-system-with-97-nm-wavelength-tunability-for-ir-up-conversion-detection
A compact master oscillator power amplifier (MOPA) laser system will be presented, consisting of Y-branch distributed Bragg reflector (DBR) laser and a tapered power amplifier, constructed on a…
Sparse Random SAR Trajectories for a Millimeter Wave 3D Radar Scanner
/en/research/publications/sparse-random-sar-trajectories-for-a-millimeter-wave-3d-radar-scanner
By use of a simplified mathematical model assuming far-field conditions and time-harmonic transmitted electromagnetic waves, the SAR trajectory (SAR = synthetic aperture radar) for a millimeter wave…
Towards 100 Gbps Wireless Networks Enabled by Millimeter Wave Traveling Wave Tubes
/en/research/publications/towards-100-gbps-wireless-networks-enabled-by-millimeter-wave-traveling-wave-tubes
New generation networks for 5G need a breakthrough to support the unstoppable increase of internet traffic. Millimeter waves offer multi-GHz bandwidth for multigigabit per second data rate. For the…
Ultrafast semiconductor lasers: pulse generation and stabilization
/en/research/publications/ultrafast-semiconductor-lasers-pulse-generation-and-stabilization
Progress in the generation and stabilization of optical pulse trains of edge-emitting passively mode-locked (PML) quantum dot (QD) and quantum well (QW) lasers and self-mode locked (SML) QD lasers is…
A Compact Optical Iodine Frequency Reference On A Sounding Rocket
/en/research/publications/a-compact-optical-iodine-frequency-reference-on-a-sounding-rocket
We present an absolute optical frequency reference based on molecular iodine and its application on a sounding rocket mission. The iodine frequency reference is based on modulation transfer…
GaN-integrated beam-switching high-power active array for satellite communications
/en/research/publications/gan-integrated-beam-switching-high-power-active-array-for-satellite-communications
This paper presents an active beam-switching circularly polarized array-fed reflector (AFR) integrated with GaN powered monolithic microwave integrated circuits (MMICs). The feed array of the…
EM simulation assisted parameter extraction for transferred-substrate InP HBT modeling
/en/research/publications/em-simulation-assisted-parameter-extraction-for-transferred-substrate-inp-hbt-modeling
In this paper, an electromagnetic (EM) simulation assisted parameter extraction procedure is demonstrated for accurate modeling of down-scaled transferred-substrate InP HBTs. The external parasitic…
Optical characterization of a novel miniature microwave inductively coupled plasma source in nitrogen flow
/en/research/publications/optical-characterization-of-a-novel-miniature-microwave-inductively-coupled-plasma-source-in-nitrogen-flow
A miniature microwave (MMW) inductively coupled plasma (ICP) source is characterized by optical emission spectroscopy and by optical imaging of nitrogen plasma. The MWW source operates in two…
Recent progress in brightness scaling by coherent beam combining of tapered amplifiers for efficient high power frequency doubling
/en/research/publications/recent-progress-in-brightness-scaling-by-coherent-beam-combining-of-tapered-amplifiers-for-efficient-high-power-frequency-doubling
Recent progress in brightness scaling by coherent beam combining of tapered amplifiers for efficient high power frequency doubling P. Albrodta, M.T. Jamalb, A.K. Hansenb,…