外文题目: Refractive index modulation of Sb70Te30 phase-change thin films by multiple femtosecond laser pulses
作者: Lei, Kai; Wang, Yang; Jiang, Minghui; Wu, Yiqun
刊名: J. Appl. Phys.
年: 2016 卷: 119 期: 17 文章编号：173105
英文关键词:

COHERENT PHONON SPECTROSCOPY; OPTICAL MEDIA; DATA-STORAGE; CRYSTALLIZATION; MECHANISM; MEMORY
英文摘要:
In this study, the controllable effective refractive index modulation of Sb70Te30 phase-change thin films between amorphous and crystalline states was achieved experimentally by multiple femtosecond laser pulses. The modulation mechanism was analyzed comprehensively by a spectral ellipsometer measurement, surface morphology observation, and two-temperature model calculations. We numerically demonstrate the application of the optically modulated refractive index of the phase-change thin films in a precisely adjustable color display. These results may provide further insights into ultrafast phase-transition mechanics and are useful in the design of programmable photonic and opto-electrical devices based on phase-change memory materials. Published by AIP Publishing.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1063/1.4948350


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