Room temperature and narrow intersubband electroluminescence from ZnCdSe/ZnCdMgSe quantum cascade laser structures

Yu Yao, Adrian Alfaro-Martinez, Kale J. Franz, William O. Charles, Aidong Shen, Maria C. Tamargo, Claire F. Gmachl

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

We report ZnCdSe/ZnCdMgSe Quantum Cascade structures with "two-phonon" and "bound-to-continuum" active region designs. The electroluminescence shows more than 3 times higher luminescence efficiency and 40 narrower linewidth (<30 meV) than previous reports. The measured turn-on voltage matches closely the calculated value, indicating the improved electron transport characteristics in these structures. A waveguide design suitable for mode confinement in this material system is also presented, which resulted in a structure with a single narrow electroluminescence peak for all temperatures from 80 to 300 K.

Original languageEnglish (US)
Article number041113
JournalApplied Physics Letters
Volume99
Issue number4
DOIs
StatePublished - Jul 25 2011

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Room temperature and narrow intersubband electroluminescence from ZnCdSe/ZnCdMgSe quantum cascade laser structures'. Together they form a unique fingerprint.

  • Cite this