Neodymium pentaphosphate microlaser pumped by the second harmonic of a YAG:Nd³⁺laser

Synthesis and luminescent properties of La1−xNdxP5O14 nanocrystals

“…A predominant number of applications were based on interesting optical properties of NdP 5 O 14 crystals. 1,[5][6][7][8][9][10][11][12][13] In this host lanthanide, ions are well separated from each other by the (PO 3 ) À tetrahedrons. The distance between optically active ions in the closest vicinity is relatively large (around 5.2 Å).…”

“…Hence much attention has been paid to using neodymium ultraphosphates in laser technology. [5][6][7][8][9][10][11][12][13] The first laser based on the heavily Nd 3+ -doped host was reported for a NdP 5 O 14 crystal 14 and was especially important from the laser miniaturization point of view. Concentration of dopants several dozen higher than in the case of YAG:1%Nd, with a relatively long lifetime (B120 ms), and strong luminescence intensity with an unbroadened emission line are the key features of pentaphosphates.…”

“…23 In this paper we report synthesis, structural and spectroscopic properties of the La 1Àx Nd x P 5 O 14 nanocrystals. Despite the fact that the spectroscopic properties and laser engineering of La 1Àx Nd x P 5 O 14 crystals have been thoroughly investigated 1,[5][6][7][8][9][10][11][12][13] no spectroscopic studies of respective nanocrystals have been performed. In particular our interest was focused on the concentration quenching of the Nd 3+ luminescence and the mechanism of cooperative interactions.…”