| 1. | Meanwhile , solid immersion lens is also applied to focus femtosecond laser pulse in three - dimensional optical data storage
分析和阐述了固体浸没透镜应用于飞秒脉冲激光三维光存储系统中的可行性及优点。 |
| 2. | The optical field attenuates as exponential function and the transmitted beam expands quickly with the increase of the distance away from solid immersion lens
固体浸没透镜的折射率越大，底面出射的光斑越小，但随着离开固体浸没透镜底面距离的增加，光斑增大得越快。 |
| 3. | In conclusion , solid immersion lens , which is feasible to focus femtosecond laser pulse in three - dimensional optical data storage , shows the rather potential to increase the volumetric density
总之，用固体浸没透镜在透明介质中进行飞秒激光三维存储是可行的、且其在提高体存储密度方面有较大的发展潜力。 |
| 4. | And it is also found that the polarized incident gauss beam become depolarized after emitting from the bottom of solid immersion lens . the beam dimension of the emitting optical field at the near - field bottom of solid immersion lens is " broadened "
在固体浸没透镜底面的近场区域，出射光场发生了退极化，使得出射总场的光斑有了一定程度的“增宽”现象。 |
| 5. | When only allows the total internal reflection beams focus on the small aperture , which is formed at the center of metal film coated on the bottom of solid immersion lens , the optical fields propagated from the aperture of different dimension is first simulated
根据衍射超分辨原理首次模拟出了底面镀有金属膜、中心留有通光微孔的固体浸没透镜的出射光场分布。 |
| 6. | The feasibility and some advantages of employment of sil have been discussed . the numerical aperture are calculated when laser pulse is defocusing . in contrast with traditional microscopy objective , the employment of solid immersion lens can effectively increase the numerical aperture of the recording system ; thereby it can increase the volumetric density and decrease the demand of the incident laser power
当脉冲聚焦点相对于固体浸没透镜底面离焦时，对系统的有效数值孔径进行了计算，结果表明采用固体浸没透镜离焦的方式进行记录，系统的有效数值孔径最低可增大到固体浸没透镜插入前的折射率倍，其数值孔径的理论极限值为存储介质的折射率。 |
| 7. | In the retrofocus project , a retrofocus structure with two elements is used in the object lens to enlarge fov and back working distance , in the head of which the negative meniscus have the effect of balancing aberration and deviating rays like a prism . and a standard hyperhemisphere immersion lens with high refractive index is put behind the object lens to satisfy the receiving of a detector with smaller photosensitive
反远距设计方案中物镜采用二片式反远距结构,增大了视场和后工作距离,弯月型负透镜在前,具有平衡像差和棱镜的偏向作用;物镜后放置高折射率标准超半球型浸没透镜,满足小光敏面探测器接收。 |
| 8. | The optical near - field distribution and propagation properties of solid immersion lens system are analyzed in detail when illuminated by linearly polarized focusing gauss beam . the change of the optical intensity and beam dimension at the bottom of solid immersion lens with different refractive index and different distance are discussed . the simulated results reveal that the higher the refractive index is , the stronger the optical intensity and the smaller the beam dimension at the bottom of the solid immersion lens will be
编制了对固体浸没透镜近场超高密度光存储系统进行模拟的二维时域有限差分程序，实现了对固体浸没透镜光存储系统的数值模拟；着重研究了线偏振的高斯光束通过固体浸没透镜的光传输和近场光场分布特性；分析了固体浸没透镜底面出射光强、光斑直径随固体浸没透镜折射率的变化、光透过固体浸没透镜后的强度、光斑直径随离开固体浸没透镜底面距离的变化。 |
| 9. | For this reason , the ultrahigh density optical disk data storage technologies based on the solid immersion lens technology and the sb film super resolution technology , which appear more promising to industrialize in the short term , have been studied in this paper . the aim of this paper is to develop the key technologies for next generation optical disc data storage system
本文围绕超高密度光盘数据存储技术中的固体浸没透镜存储技术以及基于sb多层膜的介质超分辨高密度光存储技术展开研究，其目的在于通过对这两种最接近实用化的近场高密度光存储技术的研究，掌握和发展下一代超高密度光存储设备的关键技术。 |
| 10. | A sil flying head is designed to keep the distance between sil and recording medium in near - field range . a sil optical data storage system is built up when the recording head is combined with sil flying head . meanwhile , using astigmatic focusing error detection technology and twin optical pick - up heads , a novel nontouching nanometer measurement method is developed to measure the flying height of sil , and provides us with a powerful tool to optimize the design of sil fly head
在sil存储技术研究方面，首先提出一种光学玻璃热熔加工制作sil的新方法，该方法克服了小半径球透镜加工的难题，成功制作出了半球固体浸没透镜；设计了sil飞行头系统，并利用光学头像散法聚焦误差检测原理，设计出一种双光学头sil飞行高度测量方案，实现了sil飞行头飞行高度的测量。 |
