Topic
Quantum well
About: Quantum well is a research topic. Over the lifetime, 44627 publications have been published within this topic receiving 674023 citations. The topic is also known as: QW & quantum potential well.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, a 1.16 W continuous-wave front facet output optical power and 74% wallplug efficiency were achieved in 100 µm-aperture 1.06 µm-emitting laser diodes with 2-3 µmm cavity length.
Abstract: 16 W continuous-wave room temperature front facet output optical power and 74% wallplug efficiency were attained in 100 µm-aperture 1.06 µm-emitting laser diodes with 2–3 mm cavity length. The lasers are based on AlGaAs/GaAs/InGaAs quantum well asymmetric heterostructures with 1.7 µm-thick waveguide having 0.34 cm−1 internal optical loss.
111 citations
TL;DR: In this paper, optical 2D Fourier transform spectroscopy (2DFTS) provides insight into the many-body interactions in direct gap semiconductors by separating the contributions to the coherent nonlinear optical response.
Abstract: Optical 2D Fourier transform spectroscopy (2DFTS) provides insight into the many-body interactions in direct gap semiconductors by separating the contributions to the coherent nonlinear optical response. We demonstrate these features of optical 2DFTS by studying the heavy-hole and light-hole excitonic resonances in a gallium arsenide quantum well at low temperature. Varying the polarization of the incident beams exploits selection rules to achieve further separation. Calculations using a full many-body theory agree well with experimental results and unambiguously demonstrate the dominance of many-body physics.
111 citations
IBM1
TL;DR: In this article, a model of barrier-separated regions is proposed that leads to quantization and spatial correlation of carriers near the band gap of hydrogenated amorphous silicon, and the size of these regions, which consist of pure Si bounded by potentials emanating from Si-H bonds, is estimated from a classical percolation picture.
111 citations
TL;DR: In this article, the authors used a photolithographically prepared gold grating to enhance the photoluminescence intensity of a single quantum well by covering the sample surface with a thin semitransparent metallic film.
Abstract: We have dramatically enhanced the photoluminescence intensity emitted from a single quantum well (typically by factors of 3–6) by covering the sample surface with a thin semitransparent metallic film. Using a photolithographically prepared gold grating, we show that this enhancement is due to the excitation of surface plasmons on the metal. By selectively turning off the surface plasmon excitation via sample or light polarization rotation, the enhancement can be suppressed.
110 citations
Journal Article•
TL;DR: It is shown that the intrinsic polarization of materials can be utilized to simultaneously reduce the energy gap and enhance the SOI, driving the system to a TI state.
110 citations