CGH based on partially coherent light

Junyi Duan; Juan Liu; Bining Hao; Tao Zhao; Qiankun Gao; Xinhui Duan

doi:10.1117/12.2539933

18 December 2019 CGH based on partially coherent light

Junyi Duan, Juan Liu, Bining Hao, Tao Zhao, Qiankun Gao, Xinhui Duan

Proceedings Volume 11335, AOPC 2019: Display Technology and Optical Storage; 1133503 (2019) https://doi.org/10.1117/12.2539933
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

A new expression of partially coherent light is derived. The formula of the partially coherent optical field is consisted of two terms: spatially coherent part propagated by angular spectrum and incoherent part based on the optical transfer function. Both parts are related to coherent function (degree of coherence). Then a design method for computer generated hologram based on the theory of partially coherent light is proposed. The formation process of CGH is divided into angular spectrum and optical transfer function. Both numerical simulations and optical experiments are done to verify that speckle contrast of holographic reconstructed images is improved without sacrificing in PSNR compared to traditional method. The experimental results show that the speckle contrasts are improved more than 46%, and the image quality is obviously improved. This method can be applied on three-dimensional holographic display, beam shaping and other wave-front modulation techniques.

Citation Download Citation

Junyi Duan, Juan Liu, Bining Hao, Tao Zhao, Qiankun Gao, and Xinhui Duan "CGH based on partially coherent light", Proc. SPIE 11335, AOPC 2019: Display Technology and Optical Storage, 1133503 (18 December 2019); https://doi.org/10.1117/12.2539933

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