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Title: A proposal for Coulomb assisted laser cooling of piezoelectric semiconductors

Anti-Stokes laser cooling of semiconductors as a compact and vibration-free method is very attractive. While it has achieved significant milestones, increasing its efficiency is highly desirable. The main limitation is the lack of the pristine material quality with high luminescence efficiency. Here, we theoretically demonstrate that the Coulomb interaction among electrons and holes in piezoelectric heterostructures could lead to coherent damping of acoustic phonons; rendering a significantly higher efficiency that leads to the possibility of cooling a broad range of semiconductors.
Authors:
;  [1]
  1. Bio-Inspired Sensors and Optoelectronics Laboratory (BISOL), Department of Electrical Engineering, Northwestern University, Evanston, Illinois 60208 (United States)
Publication Date:
OSTI Identifier:
22311195
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COOLING; COULOMB FIELD; DAMPING; EFFICIENCY; ELECTRON-HOLE COUPLING; ELECTRONS; HOLES; INTERACTIONS; LASER RADIATION; LUMINESCENCE; PHONONS; PIEZOELECTRICITY; RAMAN SPECTROSCOPY; SEMICONDUCTOR MATERIALS; SIMULATION