NDLI: Adding GaAs Monolayers to InAs Quantum-Dot Lasers on (001) InP

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Adding GaAs Monolayers to InAs Quantum-Dot Lasers on (001) InP

Content Provider	Semantic Scholar
Author	Qiu, Yueming Chacon, Rebecca J. Uhl, David Yang, Rui Q.
Copyright Year	2005
Abstract	27 size, and cost, the same laser beam would be used for both conoscopic holography and Raman spectroscopy. The two-laser configuration would be preferable in cases in which the illumination needed for Raman excitation significantly exceeds that needed for conoscopic holography and, hence, it becomes necessary to alternate between conoscopic and Raman analysis of each scan spot. The proposed instrument would be capable of mapping topography and chemical composition at lateral scales from microns to meters, with nanometer height resolution. Thus, the instrument could provide information on composition, roughness, porosity, and fractal dimension of specimens ranging from fine dust to large rocks, without need for any preparation of the specimens. The instrument would be mechanically noninvasive in that there would be no need for mechanical contact between a solid probe and a specimen. Because the probe would be a narrow laser beam, it would be possible to profile features at the bottoms of steep, narrow holes  for instance, crevices in a rock. The proposed instrument could also be combined with other optical spectroscopic instruments. This work was done by Mark S. Anderson of Caltech for NASA’s Jet Propulsion Laboratory. Further information is contained in a TSP (see page 1). In accordance with Public Law 96-517, the contractor has elected to retain title to this invention. Inquiries concerning rights for its commercial use should be addressed to: Innovative Technology Assets Management JPL Mail Stop 202-233 4800 Oak Grove Drive Pasadena, CA 91109-8099 (818) 354-2240 E-mail: iaoffice@jpl.nasa.gov Refer to NPO-30751, volume and number of this NASA Tech Briefs issue, and the page number.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110014880.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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