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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5466–5472

Optical cooling in Er3+:KPb2Cl5

Nicholas J. Condon, Steven R. Bowman, Shawn P. O’Connor, Richard S. Quimby, and Carl E. Mungan  »View Author Affiliations


Optics Express, Vol. 17, Issue 7, pp. 5466-5472 (2009)
http://dx.doi.org/10.1364/OE.17.005466


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Abstract

For the first time, optical cooling has been observed in the 4I13/2 excited state of erbium(III), using the low phonon energy host materal, potassium lead chloride (KPb2Cl5). Cooling was observed when samples were pumped at wavelengths longer than 1557 nm, 17 nm longer than the mean fluorescence wavelength of 1540 nm, which implies a nonradiative heat load of 1.1% for the 4I13/24I15/2 transition. When pumped at 1568 nm, the total cooling efficiency was 0.38% of the absorbed power. These results highlight the potential of Er3+:KPb2Cl5 as a material for lasers operating in an eye safe spectral region.

© 2009 Optical Society of America

OCIS Codes
(140.3320) Lasers and laser optics : Laser cooling
(140.3500) Lasers and laser optics : Lasers, erbium
(160.3380) Materials : Laser materials
(160.5690) Materials : Rare-earth-doped materials

ToC Category:
Materials

History
Original Manuscript: October 31, 2008
Revised Manuscript: February 27, 2009
Manuscript Accepted: March 2, 2009
Published: March 23, 2009

Citation
Nicholas J. Condon, Steven R. Bowman, Shawn P. O'Connor, Richard S. Quimby, and Carl E. Mungan, "Optical cooling in Er3+:KPb2Cl5," Opt. Express 17, 5466-5472 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-7-5466


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