NONLINEAR CONVERSION OF TI - SAPPHIRE LASER WAVELENGTHS

We review a series of experimental investigations into the use of nonlinear optics to shift wavelengths generated by the tunable Ti:sapphire laser. We consider two basic approaches: harmonic generation (and the related process of sum frequency generation) to reach shorter wavelengths, and optical parametric generation to cover longer wavelengths, Both techniques have been aided by the development of two sets of nonlinear crystals, the berates BBO and LBO for harmonic processes, and the KTP family of materials for use with optical parametric generation, In combination we have used nonlinear techniques to produce tunable wavelengths ranging from 193-3000 nm.