Analysis of lateral-spread photorefractive planar lenses |
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Authors: | Aimin Yan Liren Liu Dean Liu Yu Zhou Zhu Luan |
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Institution: | Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800, PR China |
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Abstract: | The photorefractive planar lens for converting a vertical incident plane wave to a lateral-spread spherical wave and vice versa, is suggested. Using the two-beam coupled-wave theory, the coupled wave equations are derived and their half-analytical solutions are also given in terms of an infinite series. The diffraction properties (beam profiles, diffraction efficiency) of the local volume grating in the lens are presented. And the focusing property of the lens is discussed and compared with that of an ideal convergent spherical wave. It is demonstrated that the suggested photorefractive planar lens shows a good focusing effect. |
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Keywords: | Photorefractive planar lens Local volume grating Diffraction efficiency |
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