Abstract
Multiple order self-diffractions by femtosecond laser-induced transient grating in CeO2 doped 75TeO2–20Nb2O5–5ZnO glass are investigated by pump-probe technique. The glass structure and component are investigated by Raman and visible–NIR absorption spectra. It is showed that there exists Ce3+ ion in tellurite glass and the transient grating is created by the optical Kerr effects and improved by the excited particle grating from the resonant absorption of the 1S0→1F3 electronic energy transition of Ce3+ ion and the conversion efficiency of the first order diffraction signal reaches about 11%. The results indicate that CeO2 doped 75TeO2–20Nb2O5–5ZnO glass has potential applications in ultra-fast all-optical switching.
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