机构

• 长春光学精密机械与物... [1]
• 西安光学精密机械研究... [1]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [1]
• 期刊论文 [1]

发表日期

• 2022 [1]
• 2010 [1]

学科主题

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Encoding and decoding communications based on perfect vector optical vortex arrays 期刊论文  OAI收割 JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2022, 卷号: 55, 期号: 43 作者:  Long, Zixu;  Hu, Huajie;  Ma, Xin;  Tai, Yuping;  Li, Xinzhong   |  收藏  |  浏览/下载：36/0  |  提交时间：2022/10/10 optical vortex array  vector optical field  optical encoding and decoding communication   Analysis of a diffractive microlens using the finite-difference time-domain method (EI CONFERENCE) 会议论文  OAI收割 作者:  Liu Y.;  Liu H.;  Liu H.;  Liu H.;  Liu Y. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 The finite-difference time-domain (FDTD) method is used as rigorous electromagnetic analysis model to calculate the field for a diffractive microlens (DML). The FDTD is used for the entire solution rather than using a near- to far-field propagation method to obtain the far-field energy distribution  thus  all the results are vector based. We derived a formula to calculate the magnitude of electric field  which is time dependent and can be used to graphically show the light wave propagation and focusing process through a DML. Both the comparison and the integral methods are presented to obtain wave amplitude in full solution space  and the distribution of light energy behind a DML is illustrated based on the wave amplitude. The formula of diffractive efficiency of the DML is derived from a time-averaged Ponyting vector  which can indicate the propagation direction of light energy. Application of these formulations in the analysis of a DML example demonstrates the high accuracy and efficiency of our method. 2010 Society of Photo-Optical Instrumentation Engineers.