Self-organized GaAs/(GaAs)4(AlAs)2 quantum-wire (QWR) lasers were grown on (775)B-oriented GaAs substrates by molecular-beam epitaxy. The QWRs were naturally formed at thick parts in the GaAs/(GaAs)4(AlAs)2 quantum well with a corrugated AlAs-on-GaAs upper interface and a flat GaAs-on-AlAs lower interface. The density of the QWRs was as high as 8×106 cm−1. Stripe-geometry lasers with the self-organized (775)B GaAs/(GaAs)4(AlAs)2 QWRs as an active region oscillated at 20 °C with threshold current densities of about 3 kA/cm2 for uncoated mirrors.
Articles you may be interested inPulse oscillation of self-organized In 0.53 Ga 0.47 As quantum wire lasers grown on (775)B InP substrates by molecular beam epitaxy J. Vac. Sci. Technol. B 23, 2526 (2005); 10.1116/1.2126670 Polarization control of vertical cavity surface emitting laser structure by using self-organized quantum wires grown on (775)B-oriented GaAs substrate by molecular beam epitaxy J. Vac. Sci. Technol. B 22, 1526 (2004); 10.1116/1.1738666Room temperature oscillation of self-organized In 0.2 Ga 0.8 As / GaAs quantum wire lasers grown on (221)A GaAs substrates by molecular beam epitaxy
We demonstrate one-step deposition of submicrometer-sized particles suspended in the gas-phase onto a plate type substrate using an electrostatic-assisted spray system. The spray nozzle was set perpendicularly to the substrates (facing the front surface). The particles were deposited on plate-type metallic surfaces, on both front and rear sides of the substrate. This "both-side" deposition can be ascribed to deflection of charged particles in the front side, and then drifting of the particles around the rear side. A numerical simulation also showed that the deposition mechanism was found to be dependent on the center and the edge of the substrate. The electrostatic effect is more effective on both the center and the edge than the diffusion effect.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.