Investigation on transient relaxation in Ag-BaO composite thin film with pump supercontinuum-probe technique
Investigation on transient relaxation in Ag-BaO composite thin film with pump supercontinuum-probe technique
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泵浦超连续谱探针技术研究Ag-BaO复合薄膜的瞬态弛豫
DOI：
10.1088/0022-3727/35/12/307
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发表时间：
2002-06
期刊：
影响因子：
--
通讯作者：
Jinlei Wu
中科院分区：
文献类型：
--
作者：
Qifeng Zhang;Danling Wang;Qihuang Gong;Jinlei Wu
利用泵浦超连续谱探测技术，在450 ~ 800 nm波长范围内，测量了Ag-BaO薄膜的光学瞬态吸收谱，时间分辨率为130 fs。观察到银纳米粒子费米能级附近的电子被激发到非平衡态，然后又回到平衡态的光学超快弛豫过程。衰减时间是指数拟合和变化从4到0.67 ps取决于探测波长。银中电子的未占态X '4的峰值估计位于费米能级以上1.47 eV处。
Optical transient absorption spectra of Ag-BaO thin film were detected in the wavelength range from 450 to 800 nm by the pump supercontinuum-probe technique with 130 fs time resolution. The optical ultrafast relaxation, in which the electrons near the Fermi level of silver nanoparticles were excited to non-equilibrium state and then returned to equilibrium state, was observed. The decay times were exponentially fitted and varied from 4 to 0.67 ps depending on the probe wavelength. The peak unoccupied state, X'4, of electrons in silver was estimated to locate at 1.47 eV above the Fermi level.
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影响因子：
2.1
作者：
Jin-lei Wu;Congfang Wang;Qiang Wu;Zongju Xia;Y. Zou
通讯作者：
Jin-lei Wu;Congfang Wang;Qiang Wu;Zongju Xia;Y. Zou
影响因子：
8.6
作者：
C. Shank;R. Yen;R. Fork;J. Orenstein;G. Baker
通讯作者：
C. Shank;R. Yen;R. Fork;J. Orenstein;G. Baker
影响因子：
2.9
作者：
Kovalenko, SA;Dobryakov, AL;Ernsting, NP
通讯作者：
Ernsting, NP
影响因子：
2.3
作者：
Del Fatti, N;Vallée, F;Nakamura, A
通讯作者：
Nakamura, A
影响因子：
4.4
作者：
P. Bortignon;R. Broglia
通讯作者：
P. Bortignon;R. Broglia