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We present the temperature dependent minority carrier mobility of Ga-content varying InGaAs/InAsSb superlattice infrared detectors by combining time-resolved photoluminescence and electron beam induced current measurements with a new numerical approach to minimize the uncertainty.
We present the temperature-dependent characterization of minority carrier diffusion length, minority carrier lifetime, diffusivity, surface recombination velocity and mobility on In(Ga)As/InAsSb type-II superlattices by using electron beam induced current and time-resolved photoluminescence measurements.
We present the characterization of minority carrier diffusion length and surface recombination velocity, as well as vertical diffusivity and mobility by performing an electron beam induced current measurement in addition to an optical lifetime measurement.
We extend a mathematical investigation of the noise in THz electro-optic detectors by considering the non-ideal properties of beam splitters in addition to non-ideal polarisers. It is found that the non-ideal properties of typical beam splitters can result in an unwanted noise floor in certain detectors.
A general theory for the pump polarization angle dependence of optical rectification has been constructed. Measurements have been taken of a 112A GaAs sample and compared to this theory. The terahertz radiation generated is a mixture of bulk (second order) and surface (third order) contributions. From this data, and a previous investigation into the azimuthal angle dependence of these samples, a value...
Sliding wear is accompanied by the formation of severely plastically deformation (SPD) layers just below the surfaces of two bodies in contact. SPD layers are typically comprised of nanograins and often display crystallographic texture. Using orientation imaging microscopy, we determine the main texture components present in steady-state wear in bronze (Cu–Ni–Sn) and Ni pins worn under dry sliding...
We generated neurotropic herpes simplex type 1 viruses expressing human placental alkaline phosphatase and studied the utility of this enzyme as a marker of infected neurons. The neurotropism of these viruses was assessed by their ability to infect sympathetic preganglionic neurons after adrenal injection in hamsters. The transneuronal transfer of these viruses was examined by their ability to cross...
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