Growth, Mechanical, Thermal and Spectral Properties of Cr3+∶MgMoO4 Crystal

Abstract

This paper reports the growth, mechanical, thermal and spectral properties of Cr3+∶MgMoO4 crystals. The Cr3+∶MgMoO4 crystals with dimensions up to 30 mm×18 mm×14 mm were obtained by TSSG method. The absorption cross-sections of 4A2→4T1 and 4A2→4T2 transitions are 12.94×10−20 cm2 at 493 nm and 7.89×10−20 cm2 at 705 nm for E//Ng, respectively. The Cr3+∶MgMoO4 crystal shows broad band emission extending from 750 nm to 1300 nm with peak at about 705 nm. The emission cross-section with FWHM of 188 nm is 119.88×10−20 cm2 at 963 nm for E//Ng. The investigated results showed that the Cr3+∶MgMoO4 crystal may be regarded as a potential tunable laser gain medium.

Crystal growth, spectroscopic properties and energy levels of Cr3+:Li2Mg2(WO4)3: a candidate for broadband laser application

“…The growth and optical characterization of large size Cr 3+ :MgMoO 4 and Cr 3+ :MgWO 4 crystals have been investigated in our laboratory. [26][27][28] Both of them exhibit strong and broadband emission with large value of emission cross-section and FWHM. Cr 3+ ion in MgMoO 4 and MgWO 4 crystal is accommodated in lattice site with relative weak crystal eld strength.…”

Growth, Thermal and Spectral Properties of Er3+-Doped and Er3+/Yb3+-Codoped Li3Ba2La3(WO4)8 Crystals

“…The schematic diagram of crystal growth apparatuses is same as that in Ref. [23] . The furnace temperature was controlled by an AL-708 controller with controlling accuracy of ±0.1 K. The raw materials of Er 3+ : LBLW and Er 3+ /Yb 3+ : LBLW were synthesized by the solid-state reaction.…”

“…The chemicals used were WO 3 , Li 2 CO 3 , BaCO 3 , La 2 O 3 , Er 2 O 3 and Y 2 O 3 with the purity of 99.99%. The solutions were composed of 25 mol% of solute (LBLW) and 75 mol% of solvent (Li 2 WO 4 ).The crystal growth procedure is similar to that in Ref [23] . When the growth ended, the crystals were drawn out of the solution and cooled down to room temperature at a cooled rate of 15 K/h.…”

Growth, spectral property and crystal field analysis of Cr3+-doped Na2Mg5(MoO4)6 crystal

“…When doped into Na 2 Mg 5 (MoO 4 ) 6 , the Cr 3+ ions would be accommodated by these Mg-O octahedra. Meanwhile, substitution of Cr 3+ for Mg 2+ might produce lattice distortion and vacancy and the symmetry would be reduced to a lower one [13][14][15]. Thus, the crystal field strength might be lowed and broadening of emission spectrum is expected.…”