Abstract
Several transition metal oxide thin films have been prepared on SiO 2 glass substrates by the sol-gel method and their nonlinear optical (NLO) properties have been examined on the basis of the third harmonic generation (THG) method. It was found that for transition metal oxides with empty d-orbitals the third order nonlinear optical susceptibility χ (3) increases with decreasing M-O bondlength. This phenomenon was explicable in terms of Lines' bond orbital theory. On the other hand, iron oxides with partially filled d-orbitals exhibited quite high χ (3) of the order of 10 -11 -10 -10 esu, which was considered to be due to the pair excitation process involving the simultaneous excitation of magnetically coupled two neighboring Fe 3+ ions. Second hyperpolarizability γ of various metal cations was estimated from our results, which is a measure of microscopic NLO properties of individual constitutional metal cations.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
