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Title: Quantum-dot superluminescent diodes with improved performance

Abstract

It is shown that optimisation of the structure of the active channel of quantum-dot InAs/AlGaAs/GaAs superluminescent diodes (SLDs) provides a noticeable increase in their external quantum efficiency. The output cw power coupled out of a single-mode fibre achieves 1.3 and 0.9 W for the emission bandwidth of 27 and 110 nm, respectively. The results of preliminary lifetime tests predict the high enough reliability of these SLDs. (lasers)

Authors:
; ;  [1];  [2]
  1. Superlum Diodes Ltd., Moscow (Russian Federation)
  2. Moscow State Institute of Radio Engineering, Electronics and Automatics (Technical University), Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
21466643
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 37; Journal Issue: 4; Other Information: DOI: 10.1070/QE2007v037n04ABEH013465
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM ARSENIDES; DIODE TUBES; EMISSION; GALLIUM ARSENIDES; INDIUM ARSENIDES; LUMINESCENCE; OPTICAL FIBERS; OPTIMIZATION; QUANTUM DOTS; QUANTUM EFFICIENCY; RELIABILITY; ALUMINIUM COMPOUNDS; ARSENIC COMPOUNDS; ARSENIDES; EFFICIENCY; ELECTRON TUBES; FIBERS; GALLIUM COMPOUNDS; INDIUM COMPOUNDS; NANOSTRUCTURES; PHOTON EMISSION; PNICTIDES

Citation Formats

Andreeva, E V, Lapin, P I, Prokhorov, Vyacheslav V, and Yakubovich, S D. Quantum-dot superluminescent diodes with improved performance. United States: N. p., 2007. Web. doi:10.1070/QE2007V037N04ABEH013465.
Andreeva, E V, Lapin, P I, Prokhorov, Vyacheslav V, & Yakubovich, S D. Quantum-dot superluminescent diodes with improved performance. United States. doi:10.1070/QE2007V037N04ABEH013465.
Andreeva, E V, Lapin, P I, Prokhorov, Vyacheslav V, and Yakubovich, S D. Mon . "Quantum-dot superluminescent diodes with improved performance". United States. doi:10.1070/QE2007V037N04ABEH013465.
@article{osti_21466643,
title = {Quantum-dot superluminescent diodes with improved performance},
author = {Andreeva, E V and Lapin, P I and Prokhorov, Vyacheslav V and Yakubovich, S D},
abstractNote = {It is shown that optimisation of the structure of the active channel of quantum-dot InAs/AlGaAs/GaAs superluminescent diodes (SLDs) provides a noticeable increase in their external quantum efficiency. The output cw power coupled out of a single-mode fibre achieves 1.3 and 0.9 W for the emission bandwidth of 27 and 110 nm, respectively. The results of preliminary lifetime tests predict the high enough reliability of these SLDs. (lasers)},
doi = {10.1070/QE2007V037N04ABEH013465},
journal = {Quantum Electronics (Woodbury, N.Y.)},
number = 4,
volume = 37,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2007},
month = {Mon Apr 30 00:00:00 EDT 2007}
}
  • Superluminescent diodes (SLDs) based on a multilayer InAs/AlGaAs quantum dot heterostructure are studied. It is shown that the emission spectra of SLDs strongly depend on the active-channel length and injection current. In particular, the conditions are determined under which the emission spectrum covers the spectral range between 1100 and 1230 nm due to the levelling of the intensities of quantum transitions from the first and second excited states. Commercial SLDs emitting in this spectral range are not available at present. The SLD design provides cw operation and efficient coupling with a single-mode fibre. The output power achieves 1 mW inmore » free space and 0.5 mW when coupled out through a fibre. Preliminary resource tests have demonstrated a rather high reliability of the developed SLDs. (lasers)« less
  • Colloidal synthesis of ternary and quaternary quantum dots (QDs) of In/Ga ratio-varied Cu−In{sub 1−x}−Ga{sub x}−S (CIGS) with nominal x = 0, 0.5, 0.7, and 1 and their application for the fabrication of quantum dot-light-emitting diodes (QLEDs) are reported. Four QLEDs having CIGS QDs with different compositions are all solution-processed in the framework of multilayered structure, where QD emitting layer is sandwiched by hybrid charge transport layers of poly(9-vinlycarbazole) and ZnO nanoparticles. The device performance such as luminance and efficiency is found to be strongly dependent on the composition of CIGS QDs, and well interpreted by the device energy level diagram proposed throughmore » the determination of QD valence band minima by photoelectron emission spectroscopic measurement.« less
  • Intensity noise in a superluminescent diode (SLD) has been studied over the frequency range from 100 Hz to 2 MHz. The ''1/F'' noise which dominates at low frequencies (<59 kHz) is superceded by a flat ''white noise'' spectrum at higher frequencies (> 500 5Hz). A more extensive investigation has been carried out in this higher frequency regime, where the intensity noise is assumed to result from quantum fluctuation effects. For a given SLD driving current, the excess noise power is found to be a linear function of photodetector current to the maximum observed level of 12 db. These results agreemore » well with the behavior predicted by a quantum amplifier model for the SLD.« less
  • The effect of a weak optical feedback on the power and spectral parameters of light-emitting modules based on near-IR quantum-well superluminescent diodes (SLDs) is studied. It is shown that even very weak parasitic feedback (k{sub fb} < -30 dB) distorts the emission spectrum of high-power SLDs and noticeably reduces their output power. (lasers)
  • The emission spectra of superluminescent diodes (SLDs) based on a multilayer quantum-well (InGa)PAs heterostructure are studied in the wavelength range from 1450 to 1650 nm. The FWHM of these spectra exceeds 120 nm in certain operating regimes. The experimental samples of light-emitting modules with output single-mode fibres are fabricated based on the SLDs studied, which produce the output power spectral density above -45 dBm nm{sup -1} within the band over 200 nm. The spectrum of such an emitter covers the main bands (S, C, and L) of WDM telecommunication systems. The possibilities of a further broadening and flattening of themore » emission band of these SLDs are considered. (lasers)« less