InAs/GaAs QDs and dilute nitride QWs VCSELs grown by molecular beam epitaxy Faten Adel Ismael Chaqmaqchee Department of Physics, Faculty of Sceince and Health, Koya University http://koyauniversity.org Abstract: The quaternary of GaAsSbN capping layer (CL) and GaAsSb/GaAsN CL InAs/GaAs quantum dots (QDs) and the GaInNAs/GaAs quantum wells (QWs) VCSEL samples were grown by molecular beam epitaxy (MBE). Photoluminescence (PL) measurement was performed for InAs/GaAs QDs with two different CLs at low temperature, while PL was carried out for GaInNAs/GaAs QWs VCSELs at various temperatures. In addition, Integrated intensity of electroluminescence (EL) for the QWs VCSEL were measured under continuous-wave (CW) and pulsed conditions to reach emission wavelength at around wavelength of λ=1.28 μm for optoelectronics applications. Thus, a low temperature red shift was achieved using GaAsSbN CL and InAs/GaAs QD but in low intensity. In addition, amplification was observed by QWs devices at low temperature of T=77K. Date: 12/04/2017 Place: Faculty of Science and Health |
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