Absorption gratings in ferroelectric Bi4Ti3O12 |
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| Authors: | X. Yue F. Mersch R.A. Rupp E. Krätzig |
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| Affiliation: | Fachbereich Physik der Universit?t Osnabrück, Barbarastr. 7, D-49069 Osnabrück, Germany, DE
Institut für Experimentalphysik der Universit?t Wien, Boltzmanngasse 5, A-1090 Wien, Austria, AT
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| Abstract: | 4 Ti3O12. Basic properties of absorption gratings in this crystal are investigated with beam-coupling experiments. Depending on the grating spacing, wavelength, and intensity of the writing beams, an absorption grating in our sample can be either in phase or shifted by 180° with respect to the light pattern. The formation mechanism of absorption grating is discussed and proposed to originate from a shallow-trap effect. Received: 10 February 1997 |
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| Keywords: | PACS: 42.70.L 42.40.-i 78.20.-e |
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