High-performance InP-based midinfrared quantum cascade lasers at Northwestern University

Manijeh Razeghi*, Yanbo Bai, Steven Slivken, Shaban R. Darvish

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


We present recent performance highlights of midinfrared quantum cascade lasers (QCLs) based on an InP material system. At a representative wavelength around 4.7 m, a number of breakthroughs have been achieved with concentrated effort. These breakthroughs include watt-level continuous wave operation at room temperature, greater than 50 peak wall plug efficiency at low temperatures, 100-W-level pulsed mode operation at room temperature, and 10-W-level pulsed mode operation of photonic crystal distributed feedback quantum cascade lasers at room temperature. Since the QCL technology is wavelength adaptive in nature, these demonstrations promise significant room for improvement across a wide range of mid-IR wavelengths.

Original languageEnglish (US)
Article number111103
JournalOptical Engineering
Issue number11
StatePublished - Nov 2010


  • broad area semiconductor lasers
  • high power
  • high wall plug efficiency
  • photonic crystal distributed feedback lasers
  • quantum cascade lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Engineering


Dive into the research topics of 'High-performance InP-based midinfrared quantum cascade lasers at Northwestern University'. Together they form a unique fingerprint.

Cite this