Exploring Coulomb interaction in piezoelectric materials for assisting the laser cooling of solids

Iman Hassani Nia, Hooman Mohseni

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

2 Scopus citations


Realization of anti-Stokes cooling requires high enough photon extraction efficiency as well as quantum efficiency, making the implementation of this technique extremely difficult for semiconductors. Here, for the first time, we demonstrate that the Coulomb interaction between photogenerated electron-hole pairs in strong piezoelectric materials such as GaN/InGaN quantum wells could assist laser cooling. By comparing to the cavity back-action mechanism, we also explain how this process depends upon laser detuning with respect to bandgap. To demonstrate the advantage of this method even further, we present simulations by using experimentally reported parameters of GaN and In0.15Ga 0.85N, in order to conclude that the net cooling is indeed possible even with current III-nitride growth technology.

Original languageEnglish (US)
Title of host publicationLaser Refrigeration of Solids VII
ISBN (Print)9780819499134
StatePublished - 2014
EventLaser Refrigeration of Solids VII - San Francisco, CA, United States
Duration: Feb 5 2014Feb 6 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherLaser Refrigeration of Solids VII
Country/TerritoryUnited States
CitySan Francisco, CA

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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