Suppression of unwanted self-focusing effects in nonlinear optical experiments using liquid crystal |
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| Authors: | Kawachi M. Kawasaki B.S. Hill K.O. |
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| Affiliation: | Communications Research Centre, Ottawa, Canada; |
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| Abstract: | It is demonstrated that undesired self-focusing of strong laser beams through a liquid crystal film can be suppressed by the application of an alternating voltage on the sample. Diffraction efficiencies greater than 10% for optically induced optical phase gratings in the liquid crystal are obtained when self-focusing has been suppressed. |
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