Nd3+-doped Lu2O3 transparent sesquioxide ceramics elaborated by the Spark Plasma Sintering (SPS) method. Part 2: First laser output results and comparison with Nd3+-doped Lu2O3 and Nd3+-Y2O3 ceramics elaborated by a conventional method

Sintering of transparent Yb-doped Lu 2 O 3 ceramics using nanopowder produced by laser ablation method

“…The decay time of the 2 F 5/2 excited state was approximated to 1.18 and 1.06 ms for vacuum and spark plasma sintered Yb:Lu 2 O 3 ceramics, respectively via single exponential fitting of decay curves. Reduced decay time of the 4 F 3/2 excited state of Nd 3+ was previously found in [16] for Nd-doped spark plasma sintered Lu 2 O 3 ceramics. Our work is in progress to improve the optical quality of spark plasma sintered Yb:Lu 2 O 3 ceramics and evaluate the nature of quenching phenomenon.…”

“…Recent trend in ceramic processing of Lu 2 O 3 materials involves different powder consolidation methods such as spark plasma sintering [11][12][13] or vacuum sintering followed by hot isostatic pressing [14] for further improving optical properties via reducing grain size and porosity. As a result, the laser operation for various rare-earth ions like Er, Nd, Tm, and Ho was obtained [14][15][16][17][18].…”

Broadband white light emission from Ce:AlN ceramics: High thermal conductivity down-converters for LED and laser-driven solid state lighting

“…In this work, we use a processing procedure based on Current Activated Pressure Assisted Densification (CAPAD) that has been shown to produce high quality optical ceramic for demanding optical applications. [13][14][15] Of particular importance are the high heating and cooling rates that allow for higher than equilibrium doping in ceramics. 16,17 The inset in the top left corner of Figure 1 is a picture of a CAPAD processed Ce:AlN ceramic on top of a commercial UV-LED (365 nm, LED World).…”

Spectroscopy of C3i and C2 sites of Nd3+-doped Lu2O3 sesquioxide either as ceramics or crystal

“…As a result, spectroscopic data of Nd 3 þ laser ions are needed in Lu 2 O 3 host, either as single crystal or as ceramics. Materials we have analyzed and compared are either Nd 3 þ -doped Lu 2 O 3 single crystals grown by the m-Pulling Down method [1] or Nd 3 þ -doped Lu 2 O 3 ceramics fabricated by the non-conventional method Spark Plasma Sintering (SPS) [5] for which we have also shown laser outputs [6]. The main goal of this article is to compare the spectroscopic data of Nd 3 þ ions occupying C 3i and C 2 sites of the sesquioxide structure not only in Nd 3 þ -doped Lu 2 O 3 ceramics as recently reported [5] but also in Nd 3 þ -doped Lu 2 O 3 single crystals.…”