NDLI: Room-temperature-operation visible-emission semiconductor diode lasers

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Room-temperature-operation visible-emission semiconductor diode lasers

Content Provider	NASA Technical Reports Server (NTRS)
Author	Nuese, C. J. Ladany, I. Kressel, H.
Copyright Year	1977
Description	There were two main approaches taken to develop shorter wavelength lasers. (1) Based on (AlGa)As and liquid-phase epitaxy, significant new results were obtained: Properties of these laser diodes (power output, spectra, and beam patterns), materials considerations, laser theory, and growth problems are discussed. The design of (AlGa)As layers is discussed from the vertical point of view, and various design curves are given. Horizontal structural requirements are also discussed. Experimental results from measurements done as a function of hydrostatic pressure are correlated with other results. (2) The first heterojunction laser structures using GaAs sub l-x P sub x and In sub y Ga sub l-y P at compositions, where the lattice constants are matched, were grown using vapor-phase growth technology and are described in detail, including experimental device results. Threshold current densities from 3,000 to 5,000 A per sq cm. and emission wavelengths from 6,520 A to 6,640 A were obtained at 77 K. The limiting factor in these devices is nonradiative recombination at the heterojunctions. Life tests on facet-coated (AlGa)As CW diodes are reported.
File Size	4042071
Page Count	69
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19770015031
Archival Resource Key	ark:/13960/t56f0n899
Language	English
Publisher Date	1977-04-01
Access Restriction	Open
Subject Keyword	Solid-state Physics Structural Design Threshold Currents Laser Outputs Semiconductor Lasers Epitaxy Vapor Phases Liquid Phases Gallium Arsenide Lasers Aluminum Compounds Laser Materials Junction Diodes Room Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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