Abstract

The energy transfer from ${\mathrm{Tm}}^{3+}$ to ${\mathrm{Nd}}^{3+}$ was explored in Tm,Nd:${\mathrm{KPb}}_2{\mathrm{Cl}}_5$ for sensitization of a possible $5\mu \mathrm{m}$ Nd laser. Evidence for an efficient energy transfer from ${\mathrm{Tm}}^{3+}$ to ${\mathrm{Nd}}^{3+}$ under 785 nm excitation was obtained through monitoring changes in (i) the ${\mathrm{Tm}}^{3+}$ decay behavior and (ii) the $5\mu \mathrm{m}$ emission intensity arising from the ${}^{4}I_{11∕2}\to {}^{4}I_{9∕2}$ transition of ${\mathrm{Nd}}^{3+}$ ions. The quantum efficiency of the $5\mu \mathrm{m}$ emission from ${\mathrm{Nd}}^{3+}$ was estimated to be approximately four times greater in Tm,Nd:${\mathrm{KPb}}_2{\mathrm{Cl}}_5$ compared with Nd:${\mathrm{KPb}}_2{\mathrm{Cl}}_5$. Sensitization of ${\mathrm{Nd}}^{3+}$ with ${\mathrm{Tm}}^{3+}$ in ${\mathrm{KPb}}_2{\mathrm{Cl}}_5$ promises a significant increase in the maximum achievable slope efficiency of a potential $5\mu \mathrm{m}$ Nd laser.

© 2005 Optical Society of America

Optically-pumped mid-IR phosphor using Tm³⁺-sensitized Pr³⁺-doped KPb₂Cl₅

Daniel Howse, Michael Logie, A. G. Bluiett, S. O'Connor, N. J. Condon, Joseph Ganem, and S. R. Bowman
J. Opt. Soc. Am. B 27(11) 2384-2392 (2010)

Optical pump-probe processes in Nd³⁺-doped KPb2Br5, RbPb2Br5, and KPb2Cl5

Katja Rademaker, Stephen A. Payne, Günter Huber, Ludmila I. Isaenko, and Eugen Osiac
J. Opt. Soc. Am. B 22(12) 2610-2618 (2005)

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)

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)

Infrared to visible upconversion of Nd³⁺ ions in KPb₂Br⁵ low phonon crystal

Rolindes Balda, Joaquín Fernändez, Ei Ei Nyein, and Uwe Hömmerich
Opt. Express 14(9) 3993-4004 (2006)