OPTICAL PROPERTIES OF NANO-CLUSTERS AND THEIR APPLICATIONS

我们研究了金属纳米团簇用于有用的政治器件，我们成功地证实了金岛薄膜的三阶大光学非线性。在由具有大光学各向异性的细长纳米团簇组成的拉伸银岛薄膜中，也证实了各向异性的光学非线性。此外，我们还利用拉伸的多层金岛膜和银岛膜实现了超薄尺寸的光学偏光片，并利用银岛膜实现了兼容cd的一次写入光学数据存储介质。该偏振片的器件厚度为200 nm，消光比为20 dB，在1500 nm波长处的插入损耗为1 dB。该光数据存储介质在600 ~ 800nm波长范围内具有70%的高反射率和大于50%的大反射率变化。首次在玻璃和半导体衬底上制备了铁磁颗粒复合聚合物薄膜。在镍、铁和YIG颗粒复合聚合物薄膜中，观察到较大的法拉第效应

We have invertigated metal nano-clusters for useful potical devicesWe have successfull confirmed 3rd order large optical nonlineality in gold island films. In the stretched silver island films composed of elongated nano-clusters with large optical anisotropy, nisotropical optical nonlineality has been also confirmedIn addition, we have realized ultra-thin size optical polarizers using stretched multilayas of gold and silver island films and CD-compatible write-once optical data storage media using silver island films. The polarizers have the device thickness of 200 nm, the extinction ratio of 20 dB,and the insertion loss od I dB at the wavelength of 1500 nm. The write-once optical data storage media have high reflectance of 70% and large reflectance change greater than 50% in the wavelength region of 600-800 nm. And we have demonstorated ferromagnetic particle composite polymer films forglass and semiconductor substrater for the first time. In nickel, iron, and YIG particle composite polymer films, the large Faraday effect is observed