7.5-MHz data-transfer rate with a planar aperture mounted upon a near-field optical slider.
7.5-MHz data-transfer rate with a planar aperture mounted upon a near-field optical slider.
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近场光学滑块上安装平面孔径时的数据传输速率为 7.5 MHz。
DOI：
10.1364/ol.25.000067
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发表时间：
2000
期刊：
影响因子：
3.6
通讯作者：
T. Ohkubo
中科院分区：
文献类型：
--
作者：
H. Yoshikawa;Y. Andoh;M. Yamamoto;K. Fukuzawa;T. Tamamura;T. Ohkubo
为了实现近场光学数据存储的快速数据采集，我们利用聚焦离子束制作了一种平面孔径式(PAM)滑块。小孔(200 nm×500 nm)形成在滑块的镀钛气浮表面上，并通过物镜(N.A.，0.55)用激光(波长=532 nm)光斑直接照射。利用电子束光刻技术在镀钛的SiO(2)盘片上刻有2 0 0 nm和4 0 0 nm宽的线条和空间图形(L和S)，对穿过光孔的光进行调制。无锥光圈的光学吞吐量大于0.02。利用PAM滑块，分别以6 m/S和3 m/S的线速度探测到了4 0 0 nm和2 0 0 nm的L和S信号，对应的数据传输速率为7 5 MHz。
We fabricated a planar aperture-mounted (PAM) slider by use of a focused ion beam to demonstrate fast data acquisition for near-field optical data storage. The aperture (200 nm x 500 nm) was formed upon the Ti-coated air-bearing surface of the slider and was directly illuminated with a laser (lambda = 532 nm) beam spot by use of an objective lens (N.A., 0.55). The light transmitted through the aperture was modulated by a Ti-coated SiO(2) disk with 200- and 400-nm-wide line-and-space (L&S) patterns engraved by electron-beam lithography. The optical throughput of the taperless aperture was greater than 0.02. By use of the PAM slider, 400- and 200-nm L&S signals were detected at linear velocities of 6 and 3 m/s, respectively, corresponding to a data-transfer rate of 7.5 MHz.