Optical cryocooling of diamond

M. Kern, J. Jeske, D. W. M. Lau, A. D. Greentree, F. Jelezko, and J. Twamley
Phys. Rev. B 95, 235306 – Published 21 June 2017

Abstract

The cooling of solids by optical means only using anti-Stokes emission has a long history of research and achievements. Such cooling methods have many advantages ranging from no moving parts or fluids through to operation in vacuum and may have applications to cryosurgery. However, achieving large optical cryocooling powers has been difficult to manage except in certain rare-earth crystals but these are mostly toxic and not biocompatible. Through study of the emission and absorption cross sections we find that diamond, containing either nitrogen vacancy (NV) or silicon vacancy defects, shows potential for optical cryocooling and, in particular, NV doping shows promise for optical refrigeration. We study the optical cooling of doped diamond microcrystals ranging 10–250 μm in diameter trapped either in vacuum or in water. For the vacuum case we find NV-doped microdiamond optical cooling below room temperature could exceed |ΔT|>10 K for irradiation powers of Pin<100 mW. We predict that such temperature changes should be easily observed via large alterations in the diffusion constant for optically cryocooled microdiamonds trapped in water in an optical tweezer or via spectroscopic signatures such as the zero-phonon line width or Raman line.

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  • Received 23 January 2016

DOI:https://doi.org/10.1103/PhysRevB.95.235306

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & Optical

Authors & Affiliations

M. Kern1,2, J. Jeske3, D. W. M. Lau3,4, A. D. Greentree3,4, F. Jelezko5,6, and J. Twamley7

  • 1Ulm University, Ulm D-89073, Germany
  • 2Department of Physics and Astronomy, Macquarie University, Sydney, New South Wales 2109, Australia
  • 3Chemical and Quantum Physics, School of Applied Sciences, RMIT University, Melbourne, Victoria 3001, Australia
  • 4ARC Centre of Excellence for Nanoscale BioPhotonics, RMIT University, Melbourne, Victoria 3001, Australia
  • 5Institute of Quantum Optics, Ulm University, 89081 Ulm, Germany
  • 6Center for Integrated Quantum Science and Technology (IQST), Ulm University, 89081 Ulm, Germany
  • 7Centre for Engineered Quantum Systems, Department of Physics and Astronomy, Macquarie University, Sydney, New South Wales 2109, Australia

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Issue

Vol. 95, Iss. 23 — 15 June 2017

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