High-power mid- and far- wavelength infrared lasers for free space communication

M. Razeghi*, A. Evans, J. Nguyen, Y. Bai, S. Slivken, S. R. Darvish, K. Mi

*Corresponding author for this work

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

8 Scopus citations


Laser-based free-space communications have been developed to serve specific roles in "last mile" high-speed data networks due to their high security, low cost, portability, and high bandwidth. Conventional free-space systems based on near infrared optical devices suffer from reliability problems due to atmospheric scattering losses and scintillation effects, such as those encountered with storms, dust, and fog. Mid-infrared wavelengths are less affected by atmospheric effects and can significantly enhance link uptime and range. This paper will discuss some of the recent advances in high-power, high temperature, high reliability mid-infrared Quantum Cascade Lasers and their potential application in highly reliable free space communication links.

Original languageEnglish (US)
Title of host publicationPhotonic Materials, Devices, and Applications II
StatePublished - Nov 23 2007
EventPhotonic Materials, Devices, and Applications II - Maspalomas, Gran Canaria, Spain
Duration: May 2 2007May 4 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherPhotonic Materials, Devices, and Applications II
CityMaspalomas, Gran Canaria


  • Free space communication
  • Intersubband
  • Mid-infrared
  • Optical fiber
  • Quantum cascade laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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