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The self-assembled InAs quantum dots (QDs) on Si substrate with high density (7.5×1010 cm-2) were achieved using relatively lower growth temperature by low-pressure metal-organic chemical vapor deposition. The PL spectra exhibit 1.3μm emission from InAs quantum dots at room temperature. PL measurements at 77K, Full Width at Half-Maximum (FWHM) is about 60meV.
N-type InP substrates have been manufactured using Vertical Boat (VB) Technique. In this paper, we will report improvement in etch-pit density (EPD) distribution for 2-inch S-doped, 2-inch-Sn-doped and 4-inch S-doped VB InP substrates in comparison to VCZ (SEI's proprietary Vapor pressure controlled Czochralski) InP substrates. EPD of 2-inch S-doped VB InP substrate is lower than SEI's standard EPD...
Room-temperature continuous wave lasing in quantum dots covered with GalnNAs on GaAs substrate was attained at 1.31 μm with threshold current density of 0.4 kA/cm2 by metal-organic chemical vapor deposition. The range of continuous wave lasing was extended to 1.33 μm with using a thin p-clad layer.
Ground state lasing above 1.30 mum (1.34 mum) was obtained for the first time from InAs quantum dots grown on GaAs substrate by metal organic chemical vapor deposition.
Self-assembled InAs quantum dot (QD) lasers emitting at 1.29 mum on GaAs substrates grown by metalorganic chemical vapor deposition (MOCVD) were achieved by using GaInNAs embedding layers. This emission wavelength is the longest wavelength ever reported for QD lasers grown by MOCVD
Summary form only given. The spectroscopy of individual quantum dots (QDs) using optical micro-probing techniques is opening up possibilities of various applications based on the physics of the zero-dimensional (0D) semiconductor structures. Self-assembled quantum dots (SAQDs) are also attractive 0D structures, where strong confinement on a no-meter scale can be realized. Here, we carried out time-correlation...
Summary from only given. In recent years, many studies of the electronic states in self-assembled quantum dots (SAQDs) using single dot spectroscopy have been reported. PL spectra measured by single dot spectroscopy show discrete and sharp peaks which indicate 0D confinement of carriers. At higher excitation powers, PL spectra show the interesting phenomena where we see many peaks to be emerged. Delkel...
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