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Characteristics of a photonic bandgap single defect microcavity electroluminescent device

  • Wei Dong Zhou
  • , Jayshri Sabarinathan
  • , Pallab Bhattarcharya
  • , Boaz Kochman
  • , Erik W. Berg
  • , Pei-Chen Yu
  • , Stella W. Pang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

A microcavity surface-emitting coherent electroluminescent device operating at room temperature under pulsed current injection is described. The microcavity is formed by a single defect in the center of a 2-D photonic crystal consisting of a GaAs-based heterostructure. The gain region consists of two 70- Å compressively strained In0.15Ga0.85 As quantum wells, which exhibit a spontaneous emission peak at 940 nm. The maximum measured output power from a single device is 14.4 μW. The near-field image of the output resembles the calculated TE mode distribution in a single defect microcavity. The measured far-field pattern indicates the predicted directionality of a microcavity light source. The light-current characteristics of the device exhibit a gradual turn-on, or a soft threshold, typical of single- or few-mode microcavity devices. Analysis of the characteristics with the carrier and photon rate equations yields a spontaneous emission factor β ≈ 0.06.
Original languageEnglish
Pages (from-to)1153-1160
JournalIEEE Journal of Quantum Electronics
Volume37
Issue number9
Online publishedSept 2001
DOIs
Publication statusPublished - Sept 2001
Externally publishedYes

Research Keywords

  • Defect mode
  • Microcavity
  • Photonic bandgap
  • Surface emitting

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