Changchun Institute of Optics,Fine Mechanics and Physics,CAS
| Investigation on pure phase modulation characteristics of liquid crystal spatial light modulator at oblique incidence | |
| Lu, Q.; L. Sheng; X. Zhang; J. Bai and Y. Qiao | |
| 2016 | |
| 发表期刊 | Zhongguo Jiguang/Chinese Journal of Lasers
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| 卷号 | 43期号:1 |
| 摘要 | Liquid crystal on silicon (LCoS) devices usually show spatial phase nonuniformity (SPNU) in applications of phase modulation, which comprises the phase retardance nonuniformity (PRNU) as a function of the applied voltage and inherent wavefront distortion (WFD) introduced by the device itself. We propose a multipoint calibration method utilizing a Fizeau interferometer to compensate SPNU of the device. Calibration of PRNU is realized by defining a grid of 3 x 6 cells onto the aperture and then calculating phase retardance of each cell versus a gradient gray pattern. With designing an adjusted gray pattern calculated by the calibrated multipoint phase retardance function, compensation of inherent WFD is achieved. The peak-to-valley (PV) value of the residual WFD compensated by the multipoint calibration method is significantly reduced from 2.5. to 0.140 lambda, while the PV value of the residual WFD after global calibration is reduced to 0.364 lambda. Experimental results of the generated finite-energy 2D Airy beams in Fourier space demonstrate the effectiveness of this multipoint calibration method. (C) 2016 Optical Society of America |
| 文章类型 | 期刊 |
| 收录类别 | EI |
| 语种 | 中文 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ciomp.ac.cn/handle/181722/57116 |
| 专题 | 中科院长春光机所知识产出 |
| 推荐引用方式 GB/T 7714 | Lu, Q.,L. Sheng,X. Zhang,et al. Investigation on pure phase modulation characteristics of liquid crystal spatial light modulator at oblique incidence[J]. Zhongguo Jiguang/Chinese Journal of Lasers,2016,43(1). |
| APA | Lu, Q.,L. Sheng,X. Zhang,&J. Bai and Y. Qiao.(2016).Investigation on pure phase modulation characteristics of liquid crystal spatial light modulator at oblique incidence.Zhongguo Jiguang/Chinese Journal of Lasers,43(1). |
| MLA | Lu, Q.,et al."Investigation on pure phase modulation characteristics of liquid crystal spatial light modulator at oblique incidence".Zhongguo Jiguang/Chinese Journal of Lasers 43.1(2016). |
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| Investigation on pur（3774KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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