Exciton-mediated photothermal cooling in GaAs membranes

André Xuereb, Koji Usami, Andreas Naesby, Eugene S Polzik, Klemens Hammerer
2012 New Journal of Physics  
Cooling of the mechanical motion of a GaAs nano-membrane using the photothermal effect mediated by excitons was recently demonstrated by some of us [K. Usami, et al., Nature Phys. 8, 168 (2012)] and provides a clear example of the use of thermal forces to cool down mechanical motion. Here, we report on a single-free-parameter theoretical model to explain the results of this experiment which matches the experimental data remarkably well.
doi:10.1088/1367-2630/14/8/085024 fatcat:4ozfnjcgand67g54243khw2o2e