Type-II superlattices and quantum cascade lasers for MWIR and LWIR free-space communications

Andrew Hood*, Allan Evans, Manijeh Razeghi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations


Free-space optical communications has recently been touted as a solution to the "last mile" bottleneck of high-speed data networks providing highly secure, short to long range, and high-bandwidth connections. However, commercial near infrared systems experience atmospheric scattering losses and scintillation effects which can adversely affect a link's operating budget. By moving the operating wavelength into the mid- or long-wavelength infrared enhanced link uptimes and increased operating range can be achieved due to less susceptibility to atmospheric affects. The combination of room-temperature, continuous-wave, high-power quantum cascade lasers and high operating temperature type-II superlattice photodetectors offers the benefits of mid- and long-wavelength infrared systems as well as practical operating conditions for next generation free-space communications systems.

Original languageEnglish (US)
Title of host publicationQuantum Sensing and Nanophotonic Devices V
StatePublished - May 21 2008
EventQuantum Sensing and Nanophotonic Devices V - San Jose, CA, United States
Duration: Jan 20 2008Jan 23 2008


OtherQuantum Sensing and Nanophotonic Devices V
Country/TerritoryUnited States
CitySan Jose, CA


  • Free space communications
  • Mid-infrared
  • Photodetector
  • Quantum cascade laser
  • Room temperature
  • Superlattices
  • Type-II

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


Dive into the research topics of 'Type-II superlattices and quantum cascade lasers for MWIR and LWIR free-space communications'. Together they form a unique fingerprint.

Cite this