Optical limiting in SrBi2Ta2O9 and PbZrxTi1−xO3 ferroelectric thin films
Optical limiting effects in SrBi2Ta2O9 (SBT) and PbZrxTi1−xO3 (PZT) ferroelectric thin films have been observed with nanosecond laser pulses at 1.064 μm. Limiting thresholds were found to be 5.84 J/cm2 for SBT and between 4.53 and 5.93 J/cm2 for PZT, depending on composition, whereas saturation thre...
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Veröffentlicht in: | Applied physics letters 2002-05, Vol.80 (18), p.3394-3396 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Optical limiting effects in SrBi2Ta2O9 (SBT) and PbZrxTi1−xO3 (PZT) ferroelectric thin films have been observed with nanosecond laser pulses at 1.064 μm. Limiting thresholds were found to be 5.84 J/cm2 for SBT and between 4.53 and 5.93 J/cm2 for PZT, depending on composition, whereas saturation thresholds for the films were about 2.92 J/cm2 and between 2.27 J/cm2 to 2.97 J/cm2, respectively. Damage thresholds around 10.0 J/cm2 and between 10.37 J/cm2 to 10.54 J/cm2, respectively for SBT and PZT, were also determined. A possible mechanism for the observed limiting, nonlinear optical scattering from the ferroelectric domains, is discussed. These results elucidate the origin of the nonlinear optical properties in perovskite-type ferroelectric thin films and show the potential role such materials can play in photonic devices based on nonlinear optical effects. |
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ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.1477618 |