Flat optical lens by use of 90-degree volume holographic grating recording geometry and nonvolatile thermal fixing in LiNbO3:Fe crystal

Ya'nan Zhi; Zhifang Chai; Yongjian Zhu; Peipei Hou; Jianfeng Sun; Yu Zhou; Liren Liu

doi:10.1117/12.2025132

25 September 2013 Flat optical lens by use of 90-degree volume holographic grating recording geometry and nonvolatile thermal fixing in LiNbO₃:Fe crystal

Ya'nan Zhi, Zhifang Chai, Yongjian Zhu, Peipei Hou, Jianfeng Sun, Yu Zhou, Liren Liu

Author Affiliations +

Proceedings Volume 8847, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VII; 88471I (2013) https://doi.org/10.1117/12.2025132
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

A new design and fabrication of flat optical lens by use of 90-degree volume holographic grating recording geometry is presented. It is recorded by the interference of a plane wave and a spherical wave in a Fe-doped LiNbO₃. The flat optical lens can laterally transfer and focus the plane wave which perpendicularly incidents on the planar crystal surface. The optimal switching from recording to thermal fixing is taken into consideration in order to obtain the nonvolatile hologram with maximum fixing efficiency. The flat optical lens with different recording and reconstructing wavelength has also been discussed. The flat optical lens has the advantages of light weight, laterally transferring and focusing, small duty ratio, and easy for the microstructure integration. The testing results measured verify that the flat optical lens can successfully be used for the free space optical communication.

Citation Download Citation

Ya'nan Zhi, Zhifang Chai, Yongjian Zhu, Peipei Hou, Jianfeng Sun, Yu Zhou, and Liren Liu "Flat optical lens by use of 90-degree volume holographic grating recording geometry and nonvolatile thermal fixing in LiNbO₃:Fe crystal", Proc. SPIE 8847, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VII, 88471I (25 September 2013); https://doi.org/10.1117/12.2025132

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KEYWORDS

Holography

Volume holography

Diffraction gratings

Diffraction

Crystals

Free space optics

Spherical lenses

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