Quantum-dot (QD) lasers exhibit many useful properties such as low threshold current, temperature and feedback insensitivity, chirpless behavior, and low linewidth enhancement factor ( H-factor). Although many breakthroughs have been demonstrated, the maximum modulation bandwidth remains limited in QD devices, and a strong damping of the modulation response is usually observed pointing out the ...

The photoresponsivity spectra of a p–i–n diode comprising of a layer of quantum dots (QD) in the intrinsic region are measured for a wide range of wavelengths of light and applied voltages. The complex behaviour of the measured spectra is analysed taking into account different channels for electron and hole capture onto the QD and their escape dynamics. The photocurrent data are accompanied by ...

In an oxide apertured quantum dot (QD) micropillar cavity-QED system, we found strong QD hysteresis effects and lineshape modifications even at very low intensities corresponding to < 10−3 intracavity photons. We attribute this to the excitation of charges by the intracavity field; charges that get trapped at the oxide aperture, where they screen the internal electric field and blueshift the QD...

Measurements of heat consumption in a parral type greenhouse, equipped with an air-heating system, were carried out in south-eastern Spain (Almería) during the 1998/99 winter. From the daily values of heat consumption (Qd, MJ m d) recorded in five identical greenhouses heated to different night temperature set-points (Tc), and data of minimum outside air temperature (Te,min), relationships betw...

PURPOSE Eslicarbazepine acetate (ESL) is a once-daily (QD) oral antiepileptic drug (AED) indicated for partial-onset seizures (POS). Clinical studies of gradual conversion to ESL 1,200 and 1,600 mg QD monotherapies were previously conducted in patients with POS who were not well-controlled by 1 or 2 AEDs. This report describes modeling and simulation of plasma eslicarbazepine (primary active me...

the one photon absorption (opa) cross section of a current carrying two-orbital quantum dot (qd) with strong electron-phonon interaction (polaron regime) is considered. using the self-consistent non-equilibrium hartree-fock (hf) approximation, we determine the dependence of opa cross section on the applied bias voltage, the strength of effective electron-electron interaction, and level spacing ...

Topical exposure to nanoscale materials is likely from a variety of sources including sunscreens and cosmetics. Because the in vivo disposition of nanoscale materials is not well understood, we have evaluated the distribution of quantum dots (QDs) following intradermal injection into female SKH-1 hairless mice as a model system for determining tissue localization following intradermal infiltrat...

InAs quantum-dot (QD) lasers were investigated in the temperature range 20–300 K and under hydrostatic pressure in the range of 0–12 kbar at room temperature. The results indicate that Auger recombination is very important in 1.3m QD lasers at room temperature and it is, therefore, the possible cause of the relatively low characteristic temperature observed, of 0 = 41 K. In the 980-nm QD lasers...

A serial triple quantum dot (TQD) integrated with a (QD) charge sensor is realized from an InAs nanowire via fine finger-gate technique. The complex states and intriguing properties of the device are studied in few-electron regime by direct transport measurements charge-sensor detection measurements. stability diagram for capacitively coupled, parallel double-QD formed QD TQD show visible capac...

In this work, the first chloride ion sensor based on QD-lucigenin nanoparticles is reported. The mechanism uses the ability of semiconductor QDs to engage in short range exchange processes, leading to fluorescence changes. An acridinium dication (lucigenin) which is an electron acceptor, was self-assembled on the surface of negative charged QDs (capped with mercaptopropionic acid). Mutual quenc...