Two-dimensional non-spatial filtering based on holographic Bragg gratings

doi:10.1088/1674-1056/19/7/074215

Abstract The filter made up of two gratings performs as a two-dimensional non-spatial filtering. This paper reports that the volume Bragg gratings are fabricated by interfering two collimated coherent laser beams in photopolymer. Diffraction efficiency of a single grating is up to 78% in Bragg's condition, then a two-dimensional non-spatial filter, which consists of two volume Bragg gratings and a half-wave plate, enables the laser beam filtered in two dimensions with the diffraction efficiency of 54%. The Bragg's condition and effect of polarisation on performances of the two-dimension filter are also discussed.

Keywords: spatial filter Bragg gratings two-dimensional filtering polarisation

Accepted manuscript online:

PACS:	42.40.Eq	(Holographic optical elements; holographic gratings)
	42.79.Dj	(Gratings)
	42.60.Jf	(Beam characteristics: profile, intensity, and power; spatial pattern formation)
	42.70.Jk	(Polymers and organics)
	42.82.Cr	(Fabrication techniques; lithography, pattern transfer)

Fund: Project supported by the Joint Fund of the National Natural Science Foundation of China and the China Academy of Engineering Physics (NSAF) (Grant No. 10676038).

Cite this article:

He Yan-Lan (何焰蓝), Zheng Hao-Bin (郑浩斌), Tan Ji-Chun (谭吉春), Ding Dao-Yi (丁道一), Zheng Guang-Wei (郑光威), Wang Xiao (王逍)-Dong (王晓东), Wang Xiao (王逍) Two-dimensional non-spatial filtering based on holographic Bragg gratings 2010 Chin. Phys. B 19 074215

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Two-dimensional non-spatial filtering based on holographic Bragg gratings

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