Thermal and optical properties of Tm3+:SrMoO4 crystal

Synthesis process and luminescence properties of Tm3+ in AWO4 (A=Ca, Sr, Ba) blue phosphors

“…Since the energy gap between the WO 4 2− group and the excited state 3 P 2 (∼38,315 cm −1 ) of Tm 3+ [33] is about 900 cm −1 and the maximum phonon energy of AWO 4 crystal is about 900 cm −1 [18], the probability of the energy transfer from the WO 4 2− group to the excited state 3 P 2 of Tm 3+ is great via one phonon-assisted process in the CaWO 4 :Tm phosphors. For SrWO 4 sample, the energy gap between its weak excitation peak at 310 nm (32,258 cm −1 ) and the excited state 1 D 2 (27,933 cm −1 ) of Tm 3+ [33] is 4325 cm −1 , the energy transfer from the WO 4 2− group to the excited state 1 D 2 of Tm 3+ is nearly impossible occurred via five phonon-assisted process in the SrWO 4 :Tm phosphors. For BaWO 4 sample, although the energy of its excitation peak at 358 nm matches with the excited state 1 D 2 of Tm 3+ , the absorption peak of BaWO 4 sample is too weak to transfer the energy from the WO 4 2− group to the excited state 1 D 2 of Tm 3+ .…”

Spectroscopic properties of Pr3+:SrMoO4 crystal

“…here N 0 is the Pr 3+ concentration in the crystal, c is the vacuum speed of light, h is Planck's constant, J is the total angular momentum of the ground state (J = 4 in Pr 3+ ), is the mean wavelength of the absorption band, , = (n 2 , + 2) 2 /9n , is the Lorentz local field correction for the refractivity of the medium, n and n are the values of ordinary and extraordinary refractive indices of the SrMoO 4 crystal, which can be obtained by [11]: …”

Growth and characterization of large SrMoO4 crystals

“…Among the molybdates materials, BaMoO 4 with a scheelite structure has high-peak Raman scattering cross-sections and is a very promising SRS material [24,25]. BaMoO 4 crystals also possess a narrower homogeneous line width.…”