Theory and design of electron blocking layers for III-N-based laser diodes by numerical simulation

Karan Mehta, Yuh Shiuan Liu, Jialin Wang, Hoon Jeong, Theeradetch Detchprohm, Young Jae Park, Shanthan Reddy Alugubelli, Shuo Wang, Fernando Ponce, Shyh Chiang Shen, Russell D. Dupuis, P. Douglas Yoder

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Although both III-N laser diodes (LDs) and LEDs employ electron blocking layers (EBLs) to reduce electron leakage from the active region, LDs typically operate at far higher current densities than LEDs. Shortcomings of the common rectangular EBL are discussed. Two alternative EBL designs have been systematically studied using numerical simulation: the inversetapered EBL and the inverse-tapered step-graded EBL. It is shown that the efficacy of each of these EBL designs depends strongly on the operational current density, suggesting that the EBL design considerations for III-N LDs and LEDs are fundamentally different.

Original languageEnglish (US)
Article number8496777
JournalIEEE Journal of Quantum Electronics
Volume54
Issue number6
DOIs
StatePublished - 2018

Keywords

  • Device modeling
  • Electron blocking layer
  • III-nitride
  • Laser diode
  • VCSEL

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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