Speckle-reduced holographic display by modulating complex amplitude in single-lens system

被引：4

作者：

Chang, Chenliang ^{[1
]}

Xia, Jun ^{[2
]}

Qi, Yijun ^{[2
]}

Yuan, Caojin ^{[1
]}

Nie, Shouping ^{[1
]}

机构：

[1] Nanjing Normal Univ, Dept Phys, Key Lab Optoelect Technol Jiangsu Prov, 1 Wen Yuan Rd, Nanjing 210023, Jiangsu, Peoples R China

[2] Southeast Univ, Sch Elect Sci & Engn, 2 Si Pai Lou, Nanjing 210096, Jiangsu, Peoples R China

来源：

OPTICAL ENGINEERING | 2016年 / 55卷 / 06期

基金：

中国国家自然科学基金;

关键词：

holographic display; computer-generated hologram; phase modulation; SPATIAL LIGHT-MODULATOR; LINEAR CANONICAL TRANSFORMS; PHASE; COMPUTER; PROJECTION; BEAM; ALGORITHM; FILTER;

D O I：

10.1117/1.OE.55.6.063110

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper proposes a method for calculating phase-only computer-generated hologram (CGH) in holographic display with reduced speckle noise. The method works by encoding the desired complex-amplitude field of object into a phase-only CGH by a linear canonical transform algorithm. The complex-amplitude field can then be reconstructed independently from the encoded CGH using a filter at the Fourier plane of a single-lens optical system. The feasibility and effectiveness of the proposed method was verified by a simulation experiment. An optical experiment for holographic display was also conducted with reduced speckle using a single phase-only spatial-light modulator. The object was, in fact, reconstructed with different depth of focus clearly without speckle noise due to the simultaneous modulation of both amplitude and phase, confirming our method's ability to suppress speckle noise in holographic displays by modulating complex amplitude in three-dimensional space. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：6