Tunable narrowband semiconductor reference oscillator technology for coherent detection lidar
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semiconductor lasers coherent lidar↗
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Results for “Semiconductor”
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Tunable narrowband semiconductor reference oscillator technology for coherent detection lidar
The coherent Doppler lidar approach for acquiring global profilometry of tropospheric winds from Earth orbit is reliant on off-nadir beam scanning geometry for retrieval of vector winds by Doppler analysis of laser radiation backscattered by entrained aerosols and cloud particles.
semiconductor lasers coherent lidar↗
Electrochemical deposition of novel semiconductors for thermoelectric devices
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electrochemical deposition semiconductors thermoel↗
Compound semiconductor electrodeposition via Ligand Stabilized Cations over large pH ranges
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electrodeposition compound semiconductor ligand st↗
Tunable Intersublevel Transitions in Self-forming Semiconductor Quantum Dots
Interfacial compositional disordering in InGaAs/GaAs quantom dots has been used to tune their intersublevel energy spaceings (delta E subscript [(i + 1) - i]).
Semiconductor Tunable Intersublevel Transitions↗
Advances in Submillimeter Semiconductor-Based Device Designs and Processes
Planar submillimeter circuits are slowly replacing whisker-contacted devices at frequencies above 100 GHz, but in many cases the size constraints brought on by the short wavelengths associated with high frequency operation have not been adequeately addressed. Also, reproducibility becomes more important as we make the transition from tunable, whisker-based circuits to more monolithic designs. We are continuing to develop new circuites with more reproducible characteristics.
Submillimeter Semiconductor↗
Using Commercial Semiconductor Technologies in Space
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Commercial Semiconductor Technologies↗
A MOCVD Infrastructure Designed to Support the Rapid Development of III-V Semiconductor Devices
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MOCVD material research semiconductor devices↗
Nonmagnetic semiconductor spin devices
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semiconductor spin devices magnetic fields structu↗
Semiconductor mid-IR interband cascade lasers for trace gas monitoring
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diode lasers mid-infrared quantum well lasers semi↗
2.5 THz GaAs Monolithic Membrane-Diode Mixer A New Planar Circut Realization for High Frequency Semiconductor Components
A novel GaAs monolithic membrane-diode (MOMED) structure has been developed and implemented as a 2.5 THz Schottky diode mixer.
monolithic membrane-diode (MOMED) frequency THz Ga↗
Ordering, Tunability, and Stability in the Formation of Semiconductor Quantum Dots
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Semiconductor Quantum Dots Metalorganic Vapor Phas↗
Thermoelectric Properties of the Incommensurated Layered Semiconductor Ge(sub x)NbTe(sub 2)
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thermoelectrics thermopower resistivity thermal co↗
Sub-kHz Linewidth GaSb Semiconductor Diode Lasers Operating Near 2 Micrometers
We report on the phase noise properties of DFB lasers operating near 2.0 microns. Measured noise spectra indicate intrinsic laser linewidths below 1 kHz. An effective linewidth of less than 200 kHz for 5 ms measurement times is estimated.
single-longitudinal-mode DFB lasers↗
Development of an Electrostatic Levitator and Containerless Processing of Metals, Alloys, and Semiconductors
Present capability of the High Temperature Electrostatic Levitator (HTESL) at JPL for the containerless materials processing is described. The capability includes the measurements of various thermophysical properties and the studies of undercooling and nucleation phenomena.
Electrostatic↗
Wide Bandgap Semiconductor Devices & Systems for Communications in Extreme Environment
The feasibility of Ka-band gallium nitride (GaN) based high power amplifier (HPA) for signal amplification in extreme planetary environment is investigated and its measured performance is presented. The data includes Pout, PAE, EVM for several waveforms and data rates, output spectrum, IMD, Noise Figure, and Gain. The data indicates excellent overall performance. Potential application of this HPA includes communication systems required to operate in the extreme hot environment of Mercury and Venus, extreme cold and high radiation environment of Jupiter’s icy moons, and Artemis missions that involve human/robotic exploration and long-term presence on the Moon.
Gallium Nitride↗
Microgravity Manufacturing of Semiconductors & Microelectronics
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Semiconductors↗