文章基本信息

标题：Multi-level coding-recoding by ultrafast phase transition on Ge2Sb2Te5 thin films
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作者：Shuai Wen ; Yun Meng ; Minghui Jiang 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2018
卷号：8
期号：1
页码：4979
DOI：10.1038/s41598-018-23360-z
语种：English
出版社：Springer Nature
摘要：phase-change thin films driven by ultrashort laser pulses were investigated using real-time reflectivity measurements. The reversible coding-recoding among the five optical levels was realized by using single-shot picosecond laser pulses with designed fluences. The optical constants, crystalline states and surface morphologies before and after ultrafast multi-level coding were also compared and analyzed. These results may lay a foundation for the further design and application of dynamically reconfigurable optical/photonic devices.