Broadband light source using modulated quantum dot structures with sandwiched sub-nano separator (SSNS) technique

Naokatsu Yamamoto, Kouichi Akahane, Tetsuya Kawanishi, Hideyuki Sotobayashi, Hiroki Fujioka, Hiroshi Takai

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A broadband light source for a wavelength range of around 1.2-1.3 μm can be fabricated using a multi-stacked and modulated InAs/InGaAs quantum dot (QD) structure with the sandwich sub-nano separator (SSNS) technique. These techniques, such as use of the modulated QD structure and SSNS structure, are considered useful in obtaining a high-quality and ultra-broadband QD optical gain material for the laser and/or optical amplifier. A broadband (>75 nm bandwidth) and bright (few tenths of a mW) light emission in its waveband is successfully demonstrated from a QD laser diode using a modulated QD optical gain with the SSNS technique.

Original languageEnglish
Pages (from-to)328-330
Number of pages3
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume8
Issue number2
DOIs
Publication statusPublished - 2011 Feb 1

Keywords

  • Broadband optical gain
  • Infrared light source
  • Laser
  • Nano-structure
  • Quantum dot

ASJC Scopus subject areas

  • Condensed Matter Physics

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