Nikolai N. Ledentsov

TL;DR: In this paper, an excitonic waveguiding effect has been proposed and realized for optoelectronics, which can be fabricated from the same matrix material (homojunction laser), and the effect is induced by nanoscale island-like insertions of narrow-gap material in a wide bandgap matrix (quantum dots).

TL;DR: The photoluminescence properties of type II GaAs/AlAs superlattices grown on the (311) surface were determined by their polarity in this paper, where it was found that the strong mixing between the Θ and X minima of the conduction band, occurring only in sublattice with strongly corrugated interfaces, allows generation of bright red luminescence at 650 nm up to room temperature.

TL;DR: In this article, a planar vertical cavity surface emitting laser with record 15 mW of continuous wave single transverse mode output power was reported, employing spatially displaced multiple aperture and deep oxidation layers in a bottom emitting geometry.

TL;DR: In this paper , a vertical-cavity surface-emitting laser (VCSEL) array with two separate electrodes for pure dc current injection and large ac signal modulation was demonstrated.

TL;DR: In this paper, it was shown that due to the use of such a waveguide structure, the temperature shift of the lasing wavelength is 0.2 nm/K, which is 2.5 times smaller than this shift in the lasers with quantum dots and with a conventional structure of the waveguide.