Thermal characteristics and analysis of quantum cascade lasers for biochemical sensing applications

Jae Su Yu, Hee Kwan Lee, Steven Slivken, Manijeh Razeghi

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


We studied the thermal characteristics and analysis of InGaAs/InAlAs quantum cascade lasers (QCLs) in terms of internal temperature distribution, heat flux, and thermal conductance from the heat transfer simulation. The heat source densities were obtained from threshold power densities measured experimentally for QCLs under room-temperature continuous-wave operation. The use of a thick electroplated Au around the laser ridges helps increase the heat removal from devices. The two-dimensional anisotropic heat dissipation model was used to analyze the thermal behaviors inside the device. The simulation results were also compared with those estimated from experimental data.

Original languageEnglish (US)
Title of host publicationBiosensing II
StatePublished - 2009
EventBiosensing II - San Diego, CA, United States
Duration: Aug 4 2009Aug 6 2009

Publication series

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


OtherBiosensing II
Country/TerritoryUnited States
CitySan Diego, CA


  • Thermal characteristics
  • heat transfer simulation
  • quantum cascade lasers
  • thermal analysis

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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