Stimulated Raman scattering in “garnet” Lu3Al5O12 ceramics - a novel host-materiel for Ln- and TM-lasant ions

Abstract

In this paper are present results of the first investigation of stimulated Raman scattering (SRS) in the "garnet" Lu 3 Al 5 O 12 crystalline ceramics, which is promising hostmaterial for activator lasants. With picoseconds laser excitation at 0.53207 μm wavelength was observed and analyzed highorder Stokes and anti-Stokes generation related to two χ (3) -promoting vibration modes (≈ 792 and ≈ 375 cm −1 ) of this novel SRS-active oxide material. A brief review of the pioneering papers on lasers based on Lu3Al5O12:Ln 3+ single crystals and known SRS-active crystalline "garnet" materials is given in tabular form as well. Fragments of SRS and RFWM spectrum of crystalline "garnet" ceramics Lu 3Al5O12 recorded at room temperature with picosecond pumping at the wavelength λp = 0.53207 μm

STED properties of Ce^3+, Tb^3+, and Eu^3+ doped inorganic scintillators

“…Scintillation emission was collected by the same objective and measured by a photo-detector (Micro Photon Devices, SPAD 50 μm, grade C), which also acted as a confocal pinhole. Scattered and reflected excitation and STED photons as well as Raman-scattered STED-laser photons [36][37][38] were blocked by detection optical filters placed in front of the photodetector. The filters were tilted at 10 0 relative to each other and separated by 2 cm to maximize their optical density (OD) at the excitation and STED laser wavelengths.…”

Diode pumped highly efficient Yb:Lu3Al5O12 ceramic laser

“…Various rare earth ions doped ceramic laser gain media have been developed and the different laser performances have been demonstrated [19][20][21]. Recently, A.A. Kaminskii et al reported the stimulated Raman scattering in LuAG ceramics and they predicted the future rapid development of the LuAG polycrystalline ceramics as a novel laser gain media [16]. In present work, high optical quality Yb:LuAG laser ceramics have been synthesized by the solid state reactive sintering method under vacuum.…”

Comparative study of Yb:Lu3Al5O12 and Yb:Lu2O3 laser ceramics produced from laser-ablated nanopowders

“…10. The cubic garnet structure of Lu3Al5O12 gives rise to 25 Raman-active modes (irreducible representations: 3A1g + 8Eg + 14F2g) [39]. The most intense band at 374 cm -1 assigned as A1g (FWHM = 11 cm -1 ) is due to the rotation of the [AlO4] tetrahedral unit.…”