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- W1995951254 abstract "This paper deals with the studies of lasing characteristics along with the gain spectra of compressively strained and step SCH based In 0.71 Ga 0.21 Al 0.08 As/InP lasing nano-heterostructure within TE polarization mode, taking into account the variation in well width of the single quantum well of the nano-heterostructure. In addition, the compressive conduction and valence bands dispersion profiles for quantum well of the material composition In 0.71 Ga 0.21 Al 0.08 As at temperature 300 K and strain ~1.12% have been studied using 4 × 4 Luttinger Hamiltonian. For the proposed nano-heterostructure, the quantum well width dependence of differential gain, refractive index change and relaxation oscillation frequency with current density have been studied. Moreover, the G–J characteristics of the nano-heterostructure at different well widths have also been investigated, that provided significant information about threshold current density, threshold gain and transparency current density. The results obtained in the study of nano-heterostructure suggest that the gain and relaxation oscillation frequency both are decreased with increasing quantum well width but the required lasing wavelength is found to shift towards higher values. On behalf of qualitative analysis of the structure, the well width of 6 nm is found more suitable for lasing action at the wavelength of 1.55 μm due to minimum optical attenuation and minimum dispersion within the waveguide. The results achieved are, therefore, very important in the emerging area of nano-optoelectronics." @default.
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- W1995951254 date "2014-11-20" @default.
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- W1995951254 title "Qualitative analysis of gain spectra of <font>InGaAlAs/InP</font> lasing nano-heterostructure" @default.
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- W1995951254 doi "https://doi.org/10.1142/s0217979214502063" @default.
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