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Optical Cooling in Er3+:KPb2Cl5

Optical Cooling in Er3+:KPb2Cl5

Nicholas J Condon, Steven R Bowman, Shawn P O'Connor, Richard S Quimby, Carl E Mungan

Opt Express. 2009 Mar 30;17(7):5466-72.

PMID: 19333313

Abstract:

For the first time, optical cooling has been observed in the (4)I(13/2) excited state of erbium(III), using the low phonon energy host materal, potassium lead chloride (KPb(2)Cl(2)). 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 (4)I(13/2)-->(4)I(15/2) transition. When pumped at 1568 nm, the total cooling efficiency was 0.38% of the absorbed power. These results highlight the potential of Er(3+):KPb(2)Cl(5) as a material for lasers operating in an eye safe spectral region.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP10138417	Erbium(III) chloride		10138-41-7	Price

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