contributor author | Guo, Liang | |
contributor author | Xu, Xianfan | |
date accessioned | 2017-05-09T01:09:48Z | |
date available | 2017-05-09T01:09:48Z | |
date issued | 2014 | |
identifier issn | 0022-1481 | |
identifier other | ht_136_12_122401.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/155421 | |
description abstract | Transient reflectance of gold was measured using ultrafast spectroscopy by varying the wavelength of the probe laser beam in the visible range. Based on the band structure of gold, the influence of the probe beam wavelength on the signal trend is analyzed in terms of sensitivity, effect of nonthermalized electrons, and relaxation rate. It is found that probing around 490 nm renders the best sensitivity and a simple linear relation between the transient reflectance and the electron temperature. The twotemperature model (TTM) is applied to calculate the electronphonon coupling factor by fitting the transient reflectance signal. This work clarifies the ultrafast energy transfer dynamics in gold and the importance of using proper probe laser wavelength for modeling the transient heat transfer process in metal. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Ultrafast Spectroscopy of Electron Phonon Coupling in Gold | |
type | Journal Paper | |
journal volume | 136 | |
journal issue | 12 | |
journal title | Journal of Heat Transfer | |
identifier doi | 10.1115/1.4028543 | |
journal fristpage | 122401 | |
journal lastpage | 122401 | |
identifier eissn | 1528-8943 | |
tree | Journal of Heat Transfer:;2014:;volume( 136 ):;issue: 012 | |
contenttype | Fulltext | |