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Article
A Novel Surface Preparation and Post-Etch Removal Technique for InGaAs Sidewalls
This paper describes in detail a surface preparation, and post-etch removal technique developed for InGaAs sidewalls. It illustrates the results demonstrating the effect of sidewall post-etch, surface preparat...
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Article
Optical Characterization of AlInP/GaAs Heterostructures
A 45 period GaAs/Al0.54In0.46P superlattice was grown by molecular beam epitaxy using valved solid-sources to supply both the arsenic (As4) and the phosphorus (P2) group V fluxes. The room temperature optical tra...
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Article
Tilted superlattice composition profile determined by photoluminescence and thermal disordering
The composition profile of an (AlAs)1/2(GaAs)1/2 tilted superlattice is characterized for the first time. The tilted superlattice sample is thermally disordered, and the energy of the direct band gap photolumines...
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Article
Use of Valved, Solid Group V Sources for the Growth of GaAs/GaInP Heterostructures by Molecular Beam Epitaxy
We report on the first growth of GaAs/Ga0.5In0.5P heterostructures by conventional molecular beam epitaxy using solid-source valved crackers to supply both the arsenic and the phosphorus fluxes. By regulating the...
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Article
GaInP and AlInP grown by elemental source molecular beam epitaxy
We report on the use of a new, valved, solid phosphorus cracker source for the growth of phosphides by molecular beam epitaxy. The source avoids the relatively high expense and high level of toxicity associate...
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Article
The sediment column as a record of trophic status: examples from Bosherston Lakes, SW Wales
Bosherston Lakes are a series of interconnected, mesotrophic to hypereutrophic, artificially-created coastal marl lakes in Dyfed, South West Wales. Progressive eutrophication of the lake system has been produc...
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Chapter and Conference Paper
The sediment column as a record of trophic status: examples from Bosherston Lakes, SW Wales
Bosherston Lakes are a series of interconnected, mesotrophic to hypereutrophic, artificially-created coastal marl lakes in Dyfed, South West Wales. Progressive eutrophication of the lake system has been produc...