TY - GEN
T1 - Conceptual study of a fiber-optical approach to solid-state laser cooling
AU - Nguyen, Dan T.
AU - Shanor, Christopher
AU - Zong, Jie
AU - Tian, Wenyan
AU - Yao, Zhidong
AU - Wu, Jianfeng
AU - Weiss, Jeff
AU - Binder, Rolf
AU - Chavez-Pirson, Arturo
PY - 2011
Y1 - 2011
N2 - 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).
AB - 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).
KW - Fiber laser
KW - Laser cooling
KW - Optical cooling
KW - Tm doped glass fiber
UR - http://www.scopus.com/inward/record.url?scp=79952657769&partnerID=8YFLogxK
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U2 - 10.1117/12.876225
DO - 10.1117/12.876225
M3 - Conference contribution
AN - SCOPUS:79952657769
SN - 9780819484888
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Laser Refrigeration of Solids IV
T2 - Laser Refrigeration of Solids IV
Y2 - 26 January 2011 through 27 January 2011
ER -