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High-power continuous-wave operation of InP-based InAs quantum-dot laser with dot-in-a-well structure and strain-modulating layer

  • Byounggu Jo*
  • , Cheul Ro Lee
  • , Jin Soo Kim
  • , Won Seok Han
  • , Jung Ho Song
  • , Jang Hee Choi
  • , Jae Hyun Ryou
  • , Jin Hong Lee
  • , Jae Young Leem
  • *Corresponding author for this work
  • Jeonbuk National University
  • Electronics and Telecommunications Research Institute
  • Gwangju Institute of Science and Technology
  • University of Houston
  • Korea Photonics Technology Institute
  • Inje University

Research output: Contribution to journalJournal articlepeer-review

Abstract

We report continuous-wave (CW) operation of an InAs/InGaAsP quantum-dot (QD) heterostructure laser diode (LD) with an output power of 1.1 W at room temperature. This is the first observation on the laser output over 1 W from InAs QD-LDs fabricated on InP substrates. Also, the high-power lasing emission was successfully achieved at up to 60 °C. The improvement in the lasing characteristics can be attributed to enhancement in modal gain of QD-LDs because of the increase in spatial carrier confinement around localized QD states by using a dot-in-a-well structure and a thin GaAs strain-modulating layer.

Original languageEnglish
Article number115815
JournalLaser Physics Letters
Volume11
Issue number11
DOIs
StatePublished - 2014.11.1

Keywords

  • dot-in-a-well structure
  • high-power laser diode
  • InAs quantum dot
  • strain-modulating layer

Quacquarelli Symonds(QS) Subject Topics

  • Physics & Astronomy

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