Enhanced 5-µm emission in Tm,Tb: KPb[sub]2[/sub]Br[sub]5[/sub] and Tm,Nd:KPb[sub]2[/sub]Br[sub]5[/sub] for mid-infrared laser applications

A. G. Bluiett; D. Peele; K. Norman; E. Brown; U. Hommerich; S. B. Trivedi; J. M. Zavada

doi:10.1117/12.842188

17 February 2010 Enhanced 5-µm emission in Tm,Tb: KPb₂Br₅ and Tm,Nd:KPb₂Br₅ for mid-infrared laser applications

A. G. Bluiett, D. Peele, K. Norman, E. Brown, U. Hommerich, S. B. Trivedi, J. M. Zavada

Proceedings Volume 7578, Solid State Lasers XIX: Technology and Devices; 75782I (2010) https://doi.org/10.1117/12.842188
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

We report on the 5 μm emission characteristics and energy transfer properties of Tb³⁺ doped KPb₂Br₅ and Nd³⁺ doped KPb₂Br₅ sensitized by Tm3+ ions. A series of co-doped samples of Tm,Tb: KPb₂Br₅ and Tm,Nd: KPb₂Br₅ samples were prepared from purified starting materials of PbBr₂, KBr, and rare earth halides. Resonant excitation into the ³H₆ → ³F₄ absorption transition of Tm³⁺ at ~1760 nm resulted in an enhanced 5 μm emission from Tb³⁺ and Nd³⁺ ions in Tm,Tb: KPb2Br5 and Tm,Nd: KPb₂Br₅, respectively. The existence of energy transfer between Tm → Tb and Tm → Nd was further evidenced by the quenching of the emission decay times of the ³F₄ → ³H₆ transition of Tm³⁺ in doubly doped Tm,Tb: KPb₂Br₅ and Tm,Nd: KPb₂Br₅ compared to singly doped Tm: KPb₂Br₅.

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A. G. Bluiett, D. Peele, K. Norman, E. Brown, U. Hommerich, S. B. Trivedi, and J. M. Zavada "Enhanced 5-µm emission in Tm,Tb: KPb₂Br₅ and Tm,Nd:KPb₂Br₅ for mid-infrared laser applications", Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75782I (17 February 2010); https://doi.org/10.1117/12.842188

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