Laser cooling of a semiconductor by 40 kelvin

Jun Zhang, Dehui Li, Renjie Chen and Qihua Xiong ()
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Jun Zhang: School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
Dehui Li: School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
Renjie Chen: School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
Qihua Xiong: School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore

Nature, 2013, vol. 493, issue 7433, 504-508

Abstract: Net laser cooling from 290 kelvin to about 250 kelvin is achieved in semiconductor cadmium sulphide ‘nanobelts’ and attributed to strong coupling between excitons and longitudinal optical phonons.

Date: 2013
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DOI: 10.1038/nature11721

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