Researchers demonstrate laser cooling of a semiconductor
Monday, January 28, 2013 - 06:00
in Physics & Chemistry
(Phys.org)—A team of physicists working in Singapore has, for the first time, demonstrated the cooling of a semiconductor using a laser. To achieve this feat, the team, as they describe in their paper published in the journal Nature, used a pump laser at a specified wavelength to annihilate longitudinal optical phonons (LOPs) causing a lowering of the temperature of the cadmium sulphide (CdS) sample.