Abstract

We report internal laser cooling in ${\mathrm{Yb}}^{3+}$-doped ${\mathrm{KPb}}_2{\mathrm{Cl}}_5$. From the quantum efficiency values measured in the heating and cooling regions by use of the photothermal deflection technique, we have obtained a room-temperature cooling efficiency of 0.2% in a sample doped with $\sim 5\times {10}^{19} \mathrm{ions}/{\mathrm{cm}}^3$. Excitation spectra obtained under high irradiation fluences show an excess of fluorescence with regard to those obtained at low fluences, which agrees with the prediction of a model based on photon–ion–phonon interaction.

© 2002 Optical Society of America

Optical cooling in Er³⁺:KPb₂Cl₅

Nicholas J. Condon, Steven R. Bowman, Shawn P. O’Connor, Richard S. Quimby, and Carl E. Mungan
Opt. Express 17(7) 5466-5472 (2009)

Optical properties of Dy³⁺- and Nd³⁺-doped KPb₂Cl₅

M. C. Nostrand, R. H. Page, S. A. Payne, L. I. Isaenko, and A. P. Yelisseyev
J. Opt. Soc. Am. B 18(3) 264-276 (2001)

Visible emission studies of melt-grown Dy-doped CsPbCl₃ and KPb₂Cl₅ crystals

Uwe Hommerich, Samuel Uba, A. Kabir, Sudhir B. Trivedi, Clayton Yang, and Ei Ei Brown
Opt. Mater. Express 10(8) 2011-2018 (2020)

Thulium-sensitized neodymium in KPb2Cl5 for mid-infrared laser development

A. G. Bluiett, N. J. Condon, S. O'Connor, S. R. Bowman, Michael Logie, and Joseph Ganem
J. Opt. Soc. Am. B 22(10) 2250-2256 (2005)

Optical properties of Nd³⁺- and Tb³⁺-doped KPb₂Br₅ and RbPb₂Br₅ with low nonradiative decay

Katja Rademaker, William F. Krupke, Ralph H. Page, Stephen A. Payne, Klaus Petermann, Guenter Huber, Alexander P. Yelisseyev, Ludmila I. Isaenko, Utpal N. Roy, Arnold Burger, Krishna C. Mandal, and Karel Nitsch
J. Opt. Soc. Am. B 21(12) 2117-2129 (2004)