Classification of noncentrosymmetric oxides with RE3+ ions applicable for self frequency doubling (SFD) laser crystals

A set of rare-earth (RE) noncentrosymmetric (NCS) binary and ternary oxides has been compiled in tables including nonlinear optical (NLO) properties, structure and shortest chemical bond lengths, L (E-O) L (M-O). The field of such crystals has been defined on the plane of L (E,M-O) bond lengths as a rosette of two ellipses of >. The areas are specified for creation of laser active RE-elements and compared for different combination of such elements as La 3+ -Nd 3+ , Y 3+ -Nd 3+ , Y 3+ -Yb 3+ , where La 3+ , Y 3+ -contained oxides are laser matrix, and Nd 3+ , Yb 3+ are suitable active constituents of self activated (SA) and self frequency doubling solid state lasers (SFD-SSL). It is note that crystals with cubic structure, and crystals are positioned out the > rosette are not useful for creation of the SFD-SSL.