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A review will be given on the latest development of 1.55 µm quantum dot lasers. Static and dynamic properties of short cavity ridge waveguide lasers will be presented exhibiting data rates up to 22 GBit/s. The impact of structural and operational parameters will be discussed and compared with a simulation model. High-resolution linewidth measurements of distributed feedback lasers indicate with <...
Low threshold visible lasers are required for a number of applications including full-color mobile projectors, heads-up displays, optical information processing systems and a host of medical applications. Lasers emitting at λ= 420 nm (blue) and 520 nm (green), have been realized with GaN-based InGaN/GaN multi-quantum wells (MQWs) as the gain media. With one exception[1], these laser heterostructures...
Generation of tunable millimeter-wave (MMW) and Terahertz (THz) signals from 117 GHz to 954 GHz is experimentally demonstrated with a 1310 nm Quantum Dot Distributed Feedback laser subject to single beam optical injection.
The four-wave mixing (FWM) analysis is successfully applied on the injection-locked quantum dot (QD) laser for linewidth enhancement factor extraction. The rate equation model of the QD lasers is simplified and the analytical model for the FWM analysis is derived and verified. By fitting the experimentally obtained regenerative signals and power spectrum signals at different detuning frequencies with...
Intensity stability with respect to pumping level and temperature is examined in electrically injected dual-λ lasers with separations between 8 and 63 nm that utilise different quantum dot states or quantum dot and quantum well states.
The nanosecond lasing performance of core-shell and alloyed CdSe/ZnS colloidal quantum dots is reported. Low amplified spontaneous emission and laser oscillation thresholds of 0.55mJ/cm2 and 0.9mJ/cm2 are demonstrated for, respectively, thin-films and distributed-feedback cavity structures.
In recent years, there has been a growing interest in the development of compact and low-cost, versatile, broadly tunable CW and ultrashort pulse laser sources generating light across the near-infrared and visible spectral ranges. Unfortunately, commercially available lasers of these spectral ranges are in practice bulky and inconvenient in use. In this respect, novel structures based on quantum dots...
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