Conceptual study of a fiber-optical approach to solid-state laser cooling

Dan T. Nguyen, Christopher Shanor, Jie Zong, Wenyan Tian, Zhidong Yao, Jianfeng Wu, Jeff Weiss, Rolf Binder, Arturo Chavez-Pirson

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

4 Scopus citations


Optical cooling in an all fiber system using fiber laser pumps and cooling fibers doped with rare earth ions has been investigated both theoretically and experimentally. A 2% Tm doped germanate glass was selected from glasses with different Tm concentrations 0.5, 1, 2, 3, 4, 5, 6, 8 and 10% wt for fabrication of the cooling fiber. A high efficiency, single mode Tm-doped fiber laser has been built to pump a Tm-doped fiber cooler. The cooling experiments done in a vacuum chamber show indications that cooling has occurred in the fiber. A theoretical framework to understand the nature of cooling in this laser cooling system has been developed which highlights the cooling power available as a function of various material and fiber parameters including background loss and absorption saturation effects in the cooling fiber. Cooling characteristics, with special emphasis on the fiber's saturation behavior, have been studied using theoretical models of Tm3+-doped glass (4-level models) and Tm3+ doped KLa(WO4)2 crystals (20-level model).

Original languageEnglish (US)
Title of host publicationLaser Refrigeration of Solids IV
StatePublished - 2011
EventLaser Refrigeration of Solids IV - San Francisco, CA, United States
Duration: Jan 26 2011Jan 27 2011

Publication series

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


OtherLaser Refrigeration of Solids IV
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


Dive into the research topics of 'Conceptual study of a fiber-optical approach to solid-state laser cooling'. Together they form a unique fingerprint.

Cite this