All fiber approach to solid-state laser cooling

Dan T. Nguyen, Jie Zong, Dan Rhonehouse, Andy Miller, Zhidong Yao, Garrett Hardesty, N. H. Kwong, Rolf Binder, Arturo Chavez-Pirson

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

8 Scopus citations


An all fiber approach to optical cooling is being investigated experimentally and theoretically using Tm-doped fiber laser and Tm-doped fiber cooler. A single mode, high efficiency and high power Tm-doped fiber laser is used to pump at the absorption edge of Tm-doped fiber coolers, one made by germanate and the other by tellurite glasses. The glass characterization shows that the quenching effect, which is negative for cooling processes in the fiber, in germanate glass is much stronger than that in tellurite glass. The preliminary results of experiments indicate cooling effects could occur in the fiber, but net cooling in the system has not been achieved. A theoretical framework aimed at understanding the nature of cooling in this laser cooling system has been developed which shows that the temperature in the sample could increase even if the fiber core is indeed cooling. The details of the temperature dynamics depend on many factors such as background loss and absorption of scattered light by the heat spreader.

Original languageEnglish (US)
Title of host publicationLaser Refrigeration of Solids V
StatePublished - 2012
EventLaser Refrigeration of Solids V - San Francisco, CA, United States
Duration: Jan 25 2012Jan 26 2012

Publication series

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


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


  • Fiber laser
  • Laser cooling
  • Optical cooling
  • Tm doped glass fiber

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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