Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Quantum Dot Laser"”.
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Photonic generation of microwave signals : a quantum dot mode locked laser as a microwave source
… signals can be photonically generated inside a quantum dot, passively mode locked laser. In order for this laser to be used as a microwave source, a microwave interface was created and connected to the laser. To characterize the source, its output microwave impedance was measured by using the …
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Pathways for quantum dot optoelectronics fabrication using soft nanoimprint lithography
… termed “soft NIL” is used to create and study quantum dot arrays according to two concepts. In the first concept, a dense array of nano-sized holes are etched into a blank GaAs substrate. When a thin InAs quantum dot (QD) layer is grown on top, the QDs nucleate only at the locations of the …
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Quantum dot gain-lever laser diode
Semiconductor quantum dot (QD) lasers are competitive candidates for many applications such as high-speed long-haul optical communication systems. This is due to their superior lasing characteristics (compared to conventional quantum well (QW) lasers) and also their potential for high differential …
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Optically injected dual state quantum dot lasers
… the excitable pulses seen in optically injected lasers. This thesis investigates the feasibility of optically injected dual state quantum dot lasers as artificial photonic neurons. Photonic waveguides are not as sensitive to centimetre long transmission lines as electronic circuits. This could be …
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Novel semiconductor based broadly tunable light sources
… led to the realisation of a new generation of laser sources. Furthermore, the advent of a new generation of quasi-phase-matched, waveguided and semiconductor nonlinear materials together with novel semiconductor lasers have led to the development of new frequency conversion and parametric …
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Theory of Operating Characteristics of Quantum Dot Lasers with Asymmetric Barrier Layers
In this work, the operating characteristics of quantum dot (QD) lasers with asymmetric barrier layers (ABLs) are studied. Several different cases are examined, in particular: 1) Effect of excited states on static and dynamic operating characteristics Within QDs, in addition to the lasing ground …
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High power ultra-short pulse Quantum-dot lasers
In this thesis, novel multi-section laser diodes based on quantum-dot material are designed and investigated which exhibit a number of advantages such as low threshold current density; temperature-insensitivity and suppress carrier diffusion due to discrete nature of density of state of …
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Design, defect reduction, and dislocation tolerance of red lasers on Si (001)
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01