Efficient Pr3+ laser material excitation by three-for-one cross-relaxation

Larry D. Merkle; Mark Dubinskii

doi:10.1117/12.2264840

1 May 2017 Efficient Pr³⁺ laser material excitation by three-for-one cross-relaxation

Larry D. Merkle, Mark Dubinskii

Proceedings Volume 10192, Laser Technology for Defense and Security XIII; 1019209 (2017) https://doi.org/10.1117/12.2264840
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States

Abstract

Pr³⁺ has three excited manifolds with the right energy spacings for emission between 3.5 and 5.5 microns, and can be excited efficiently using laser diodes developed for telecommunications. In the potential laser crystal Pr:RbPb₂Cl₅, we have observed strikingly strong fluorescence in this wavelength range following 1.53-micron excitation. Careful analysis indicates this must be due to two cross-relaxation processes that, together, efficiently convert one Pr³⁺ initially excited to the ³F₃ manifold into three ions excited to the ³H₅ manifold. This newly discovered “three-for-one” crossrelaxation process in Pr³⁺ may greatly enhance its utility as a mid-infrared laser ion.

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Citation Download Citation

Larry D. Merkle and Mark Dubinskii "Efficient Pr³⁺ laser material excitation by three-for-one cross-relaxation", Proc. SPIE 10192, Laser Technology for Defense and Security XIII, 1019209 (1 May 2017); https://doi.org/10.1117/12.2264840

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