Coherent phonon dynamics in a c-plane sapphire crystal before and after intense femtosecond laser irradiation

doi:10.1364/oe.392505

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	Coherent phonon dynamics in a c-plane sapphire crystal before and after intense femtosecond laser irradiation
	X. Zhao,Z. G. Nie,L. Ma,F. T. Zhang,M. M. Hao,B. Wang,W. R. Zhao,L. Luo,J. H. Zhang and C. C. Huang
	2020
发表期刊	Optics Express
ISSN	1094-4087
卷号	28 期号:11 页码:16003-16011
摘要	Femtosecond pump-probe experiments with a similar to 6.4 fs time-resolution were performed to investigate the coherent phonon dynamics in a c-plane sapphire crystal before and after intense 800 nm femtosecond laser irradiation. The intense femtosecond laser induced defect/distortion and even re-crystallization of crystalline structures, which result in the appearance of new peaks and relative intensity change in coherent phonon and Raman spectra. The combination of these two spectra was found to be beneficial to evidence the variation of crystalline structure and further to differentiate the origins of new Raman peaks after irradiation. Further analysis of time-dependent differential absorbance with damped cosine function fitting and Fourier transfer calculation yields the vibrational parameters, including periods, damping times and initial phases, before and after irradiation. With these parameters, the defect-effects on damping time and the mechanism of coherent phonon generation were addressed. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
DOI	10.1364/oe.392505
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收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64365
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	X. Zhao,Z. G. Nie,L. Ma,F. T. Zhang,M. M. Hao,B. Wang,W. R. Zhao,L. Luo,J. H. Zhang and C. C. Huang. Coherent phonon dynamics in a c-plane sapphire crystal before and after intense femtosecond laser irradiation[J]. Optics Express,2020,28(11):16003-16011.
APA	X. Zhao,Z. G. Nie,L. Ma,F. T. Zhang,M. M. Hao,B. Wang,W. R. Zhao,L. Luo,J. H. Zhang and C. C. Huang.(2020).Coherent phonon dynamics in a c-plane sapphire crystal before and after intense femtosecond laser irradiation.Optics Express,28(11),16003-16011.
MLA	X. Zhao,Z. G. Nie,L. Ma,F. T. Zhang,M. M. Hao,B. Wang,W. R. Zhao,L. Luo,J. H. Zhang and C. C. Huang."Coherent phonon dynamics in a c-plane sapphire crystal before and after intense femtosecond laser irradiation".Optics Express 28.11(2020):16003-16011.

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