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Red Laser-Induced Domain Inversion in MgO-Doped Lithium Niobate Crystals |
| LI Da-Shan 1;LIU De-An1;ZHI Ya-Nan1;QU Wei-Juan1;LIU Li-Ren1;ZHANG Juan2 |
| Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, PO Box 800-211, Shanghai 2018002School of Communication and Information Engineering, Shanghai University, Shanghai 200072 |
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| Cite this article: |
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LI Da-Shan, LIU De-An, ZHI Ya-Nan et al 2007 Chin. Phys. Lett. 24 971-974 |
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Abstract A laser beam at wavelength 647nm is focused on a sample of 5mol% MgO-doped lithium niobate crystal for domain inversion by a conventional external electric field. In this case, a reduction of 36% in the electric field required for domain nucleation (nucleation field) is observed. To the best of our knowledge, it is the longest wavelength reported for laser-induced domain inversion. This extends the spectrum of laser inducing, and the experimental results are helpful to understand the nucleation dynamics under laser illumination. The dependence of nucleation fields on intensities of laser beams is analysed in experiments.
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| Keywords:
42.70.Mp
75.60.Ch
77.84.Dy
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Received: 12 November 2006
Published: 26 March 2007
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