| Discrete complex amplitude filter for ultra long optical tube | |
| WangJiming; LiuQingliang; LiuYouwen; ChenWeibin; ZhanQiwen; Wang, Jiming | |
| 2011 | |
| 会议名称 | 2011 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration |
| 会议录名称 | Proceedings of SPIE - The International Society for Optical Engineering |
| 页码 | 809722 |
| 会议日期 | November 6, 2011 - November 9, 2012 |
| 会议地点 | Beijing, China |
| 出版地 | P.O. Box 10, Bellingham, WA 98227-0012, United States |
| 出版者 | SPIE |
| 会议主办者 | The Society of Photo-Optical Instrumentation Engineers (SPIE); China Instrument and Control Society (CIS); Chinese Optical Society (COS) |
| 产权排序 | 2 |
| 摘要 | We proposed a discrete complex amplitude filter to create a focused hollow field with ultra long depth of focus. As for a high numerical aperture lens (NA=0.95), the focused field in the focal region can be engineered into a field like a long "tube" with flat wall through manipulating the distribution of the transmitted amplitude and phase at the pupil plane. This complex amplitude filter at the pupil plane can be discretized into multiple annular zones with different radius, transmittances and phase delays. A focused tube field with long depth of focus(similar to 9 lambda) has been created as an example through separating and averaging of the projected pupil radiation pattern of magnetic dipole array in the focal region. Imperfections of the designed filter will influence the quality of the generated optical tube field and tolerance deviation of the radius, transmittance and phase delay in each zone is discussed. For the optical trapping, this created tube field can expand the manipulated distance and increase the trapped particles' numbers. |
| 关键词 | Optical Trapping Azimuthal Polarization Discrete Complex Amplitude Filter Optical Tube Depth Of Focus |
| 作者部门 | 瞬态光学国家重点实验室 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| ISSN号 | 0277-786X |
| 文献类型 | 会议论文 |
| 条目标识符 | http://ir.opt.ac.cn/handle/181661/20174 |
| 专题 | 瞬态光学研究室 |
| 通讯作者 | Wang, Jiming |
| 推荐引用方式 GB/T 7714 | WangJiming,LiuQingliang,LiuYouwen,et al. Discrete complex amplitude filter for ultra long optical tube[C]. P.O. Box 10, Bellingham, WA 98227-0012, United States:SPIE,2011:809722. |
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