MilliporeSigma
  • Home
  • Search Results
  • Deactivation effects of the lowest excited state of Ho3+ at 2.9 μm emission introduced by Pr3+ ions in LiLuF4 crystal.

Deactivation effects of the lowest excited state of Ho3+ at 2.9 μm emission introduced by Pr3+ ions in LiLuF4 crystal.

Optics letters (2012-12-22)
Peixiong Zhang, Yin Hang, LianHan Zhang
ABSTRACT

The use of Pr3+ codoping for enhancement of the Ho3+:5I6 →5I7 mid-IR emissions were investigated in the LiLuF4 crystal for the first time. It was found that Pr3+ greatly increased Ho3+ 2.9 μm emission by depopulating the Ho3+:5I7 level while having little influence on the Ho3+:5I6 level, leading to greater population inversion. The energy transfer efficiency from Ho3+:5I7 to Pr3+:3F2 is calculated to be 88%. Based on Judd-Ofelt theory, the 2.9 μm emission cross section is calculated to be 1.91×10(-20)   cm2, and the gain property of the Ho3+:5I6 →5I7 transition is discussed. We propose that the Ho, Pr:LiLuF4 crystal may be a promising material for 2.9 μm laser applications.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Lithium fluoride, powder, -300 mesh
Sigma-Aldrich
Lithium fluoride, powder, <100 μm, ≥99.98% trace metals basis
Sigma-Aldrich
Lithium fluoride, ≥99.99% trace metals basis
Sigma-Aldrich
Lithium fluoride, BioUltra, ≥99.0% (F)
Sigma-Aldrich
Lithium fluoride, Precipitated, 99.995%
Sigma-Aldrich
Lithium-6Li fluoride, 95 atom % 6Li, 99% (CP)
Sigma-Aldrich
Holmium, chips, 99.9% trace metals basis
Sigma-Aldrich
Holmium, foil, thickness 1 mm, 99.9% trace rare earth metals basis