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

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

中国物理B ›› 2010, Vol. 19 ›› Issue (7): 74215-074215.doi: 10.1088/1674-1056/19/7/074215

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

王晓东¹, 王逍¹, 何焰蓝², 郑浩斌², 谭吉春², 丁道一², 郑光威²

(1)Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China; (2)Science College, National University of Defense Technology, Changsha 410073, China

出版日期:2010-07-15 发布日期:2010-07-15
基金资助:
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).

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

He Yan-Lan (何焰蓝)^a, Zheng Hao-Bin (郑浩斌)^a, Tan Ji-Chun (谭吉春)^a, Ding Dao-Yi (丁道一)^a, Zheng Guang-Wei (郑光威)^a, Wang Xiao (王逍)-Dong (王晓东)^b, Wang Xiao (王逍)^b

^a Science College, National University of Defense Technology, Changsha 410073, China; ^b Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China

Online:2010-07-15 Published:2010-07-15
Supported by:
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).

摘要/Abstract

摘要： 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.

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.

Key words: spatial filter, Bragg gratings, two-dimensional filtering, polarisation

中图分类号: (Holographic optical elements; holographic gratings)

42.40.Eq

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)

何焰蓝, 郑浩斌, 谭吉春, 丁道一, 郑光威, 王晓东, 王逍. Two-dimensional non-spatial filtering based on holographic Bragg gratings[J]. 中国物理B, 2010, 19(7): 74215-074215.

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[J]. Chin. Phys. B, 2010, 19(7): 74215-074215.

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

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

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