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White Light Photorefractive Phase Zone Plates |
| GAO Yuan-Mei1; LIU Si-Min2 |
| 1College of Physics and Electronics, Shandong Normal University, Jinan 2500142Department of Physics, Nankai University, Tianjin 300071 |
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| Cite this article: |
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GAO Yuan-Mei, LIU Si-Min 2008 Chin. Phys. Lett. 25 544-547 |
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Abstract Incoherent white light from an incandescent source is employed to fabricate volume phase zone plates in LiNbO3:Fe, for the first time to our knowledge, which can guide and modulate the input white light or laser light. The diffractive efficiency of the white light volume phase zone plates fabricated can reach as high as 12%. In addition, we test the volume phase zone plates by a probe beam and find that the volume phase zone plate is present in the direction perpendicular to the c-axis and absent in the direction parallel to the c-axis. This directly proves the existence of photovoltaic photorefractive
anisotropy of white light.
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| Keywords:
42.65.Tg
42.65.-k
42.70.Nq
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Received: 06 April 2007
Published: 30 January 2008
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| PACS: |
42.65.Tg
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(Optical solitons; nonlinear guided waves)
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42.65.-k
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(Nonlinear optics)
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42.70.Nq
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(Other nonlinear optical materials; photorefractive and semiconductor materials)
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