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Proceedings Paper

All fiber approach to solid-state laser cooling
Author(s): Dan T. Nguyen; Jie Zong; Dan Rhonehouse; Andy Miller; Zhidong Yao; Garrett Hardesty; N. H. Kwong; Rolf Binder; Arturo Chavez-Pirson
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Paper Abstract

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.

Paper Details

Date Published: 8 February 2012
PDF: 10 pages
Proc. SPIE 8275, Laser Refrigeration of Solids V, 827506 (8 February 2012); doi: 10.1117/12.909197
Show Author Affiliations
Dan T. Nguyen, NP Photonics (United States)
Jie Zong, NP Photonics (United States)
Dan Rhonehouse, NP Photonics (United States)
Andy Miller, NP Photonics (United States)
Zhidong Yao, NP Photonics (United States)
Garrett Hardesty, The Univ. of Arizona (United States)
N. H. Kwong, College of Optical Sciences, The Univ. of Arizona (United States)
Rolf Binder, The Univ. of Arizona (United States)
College of Optical Sciences, The Univ. of Arizona (United States)
Arturo Chavez-Pirson, NP Photonics (United States)

Published in SPIE Proceedings Vol. 8275:
Laser Refrigeration of Solids V
Richard I. Epstein; Mansoor Sheik-Bahae, Editor(s)

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