%0 Journal Article
%T Effect of Pulse Width and Fluence of Femtosecond Laser on Electron--Phonon Relaxation Time<br>
%A FANG Ran-Ran
%A ZHANG Duan-Ming WEI Hua
%A LI Zhi-Hua
%A YANG Feng-Xia
%A TAN Xin-Yu
%A <br>
%J 中国物理快报
%D 2008
%I 
%X The electron--phonon relaxation time as functions of pulse width and fluence of femtosecond laser is studied based on the two-temperature model. The two-temperature model is solved using a finite difference method for copper target. The temperature distribution of the electron and the lattice along withspace and time for a certain laser fluence is presented. The time-dependence of lattice and electron temperature of the surface for different pulse width and different laser fluence are also performed, respectively. Moreover, the variation of heat-affected zone per pulse with laser fluence is obtained. The satisfactory agreement between our numerical results and experimental dataindicates that the electron--phonon relaxation time is reasonably accurate with the influences of pulse width and fluence of femtosecond laser.
%K 52
%K 38
%K Mf
%K 79
%K 20
%K Ds<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=AD4E61852F75A64132E2CBAE1D04BD03&yid=67289AFF6305E306&vid=C5154311167311FE&iid=F3090AE9B60B7ED1&sid=25C4D6992F9AA731&eid=59F5144E767C9604&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0