Cr. Pollock et al., CR4- PRESENT PERFORMANCE AND PROSPECTS FOR NEW HOST LATTICES( LASERS ), IEEE journal of selected topics in quantum electronics, 1(1), 1995, pp. 62-66
Cr-doped lasers, based on forsterite and YAG, provide broadly tunable
power in the 1.25-mu m and 1.45-mu m regions, Performance data on tuni
ng range, pumping, output power, and thermal management for these lase
rs is reviewed. Potential new crystals for Cr4+ Should have heavy atom
s to reduce lattice phonon frequencies, a distorted tetrahedral cage f
or the Cr4+ ion, and possibly an octahedral site for Cr3+. Possible ma
terials include monticellite and diopside.