Borate nonlinear optical crystals properties

Xue D., Betzler K., Hesse H. and hammers D., Nonlinear optical properties of borate crystals. Solid State Commm., 114 (2000) pp. 21-25. 

A large amount of the information in this section is taken from the compilations of low- and high-frequency properties of dielectric crystals in Landolt-Bdmstein, Group m, Vols. 29 and 30, especially Vol. 30b. Since 1992-1993, the date of publication of the first of these volumes, a large amount of new data on the physical properties of dielectrics has appeared in the literature. In particular, various linear and nonlinear optical properties of new crystals in the borate family (BBO, LBO, CBO, and CLBO) and of new organic crystals (DLAP, MNMA,... 

The NLO properties in nanoparticle sizes have been obtained [419] (Figure 6.32). From the reported data one can see that decreasing nanocrystalline sizes favor enhanced second-order susceptibilities. For all the samples the optimal ratio between the fundamental and writing beams was equal to about 15. For the samples larger than 300 nm, the effect was independent of the nanoparticle sizes. The relaxation of the optically formed nonlinear grating was not less than 80%. The obtained effective optical susceptibilities are comparable to those of the excellent borate crystals. 

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