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This paper discusses micro-and nanoscale coherent light sources, with controlled emission wavelength, direction and polarization, which have important applications in chip-level optical communications, biosensing, and quantum information processing. This paper reports about free-standing microbelt-like optical cavities by embedding a ridge-waveguide in a rolled-up tube structure, formed when a coherently...
Threshold current reduction and polarization modulation of an electrically injected spin-polarized VCSEL operating at 200 K have been investigated experimentally and theoretically.
The characteristics of a InAs/GaAs self-organized quantum dot (QD) vertical cavity surface-emitting laser (VCSEL) with both non-magnetic and ferromagnetic (FM) contacts under an externally-applied magnetic field in the Faraday geometry is investigated. Considerable enhancement in output light intensity and threshold current reduction when the magnetic field is in the out-of-plane direction is observed...
In this context, we have investigated the growth kinetics and characteristics of metamorphic InAs QD lasers on GaAs, wherein special techniques of p-doping and tunnel injection are incorporated. As a result, we have realized high quality InAs QDs on GaAs that are comparable, in both photoluminescence (PL) intensity and linewidth (~30 meV), to state-of-the-art 1.1 and 1.3 μm InAs pseudomorphic QDs...
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