The application of surface second harmonic sensor to probe laser induced modification of titanium dioxide.
Al-Obaidi, Ala H. R.
Robertson, Peter K. J.
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LEE, S.-K., VRILLET, G., AL-OBAIDI, A. H. R., ROBERTSON, P. K. J. and MCSTAY, D., 1999. The application of surface second harmonic sensor to probe laser induced modification of titanium dioxide. In : N. M. WHITE and A. T. AUGOUSTI, eds. Sensors and their Applications X: Proceedings of the 10th Conference on Sensors and their Applications, held in Cardiff, Wales, 5-8 September 1999. New York: Taylor and Francis. Pp. 37-41.
The effects of high power pulsed laser light on a TiO2 photocatalyst have been investigated using a surface second harmonic generation (SSHG) sensor. When TiO2 is irradiated with a laser at 355mm a visible change in colour from white to dark blue crystals was observed. X-ray diffraction studies indicate that the crystal structure of the TiO2 developed a more rutile form following laser exposure.