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Title: Laser cooling of CdS nanobelts : thickness matters
Authors: Li, Dehui
Zhang, Jun
Xiong, Qihua
Issue Date: 2013
Source: Li, D., Zhang, J.,& Xiong, Q. (2013). Laser cooling of CdS nanobelts: Thickness matters. Optics Express, 21(16), 19302-19310.
Series/Report no.: Optics express
Abstract: We report on the thickness dependent laser cooling in CdS nanobelts pumped by a 532 nm green laser. The lowest achievable cooling temperature is found to strongly depend on thickness. No net cooling can be achieved in nanobelts with a thickness below 65 nm due to nearly zero absorption and larger surface nonradiative recombination. While for nanobelts thicker than ~120 nm, the reabsorption effect leads to the reduction of the cooling temperature. Based on the thickness dependent photoconductivity gain, mean emission energy and external quantum efficiency, the modeling of the normalized temperature change suggests a good agreement with the experimental results.
ISSN: 1094-4087
Rights: © 2013 OSA. This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of OSA. The paper can be found at the following official DOI: [].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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