Quantum Dot Technologies

Hogg, R. A.; Zhang, Ziyang

doi:10.1002/9783527665587.ch1

Cited by 2 publications

(1 citation statement)

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“…As shown in Figure 6 b, the lattice parameter can be continuously relaxing along the growth direction, thus allowing the elastic energy to relax without misfit dislocations at the interfaces of the QDs. In the S–K growth process of the self-assembled QD, two aspects need to be considered: the processes of dynamics and thermodynamics [ 55 ]. Figure 7 a shows the main dynamics process during the epitaxial growth, including adsorption, surface migration, nucleation, diffusion to the substrate (intermixing), step incorporation, and island incorporation.…”

Section: Growth Methods Of Qd Materialsmentioning

confidence: 99%

Recent Developments of Quantum Dot Materials for High Speed and Ultrafast Lasers

et al. 2022

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Owing to their high integration and functionality, nanometer-scale optoelectronic devices based on III-V semiconductor materials are emerging as an enabling technology for fiber-optic communication applications. Semiconductor quantum dots (QDs) with the three-dimensional carrier confinement offer potential advantages to such optoelectronic devices in terms of high modulation bandwidth, low threshold current density, temperature insensitivity, reduced saturation fluence, and wavelength flexibility. In this paper, we review the development of the molecular beam epitaxial (MBE) growth methods, material properties, and device characteristics of semiconductor QDs. Two kinds of III-V QD-based lasers for optical communication are summarized: one is the active electrical pumped lasers, such as the Fabry–Perot lasers, the distributed feedback lasers, and the vertical cavity surface emitting lasers, and the other is the passive lasers and the instance of the semiconductor saturable absorber mirrors mode-locked lasers. By analyzing the pros and cons of the different QD lasers by their structures, mechanisms, and performance, the challenges that arise when using these devices for the applications of fiber-optic communication have been presented.

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Section: Growth Methods Of Qd Materialsmentioning

confidence: 99%