femtosecond laser absorption in fused silica numerical and experimental investigation
femtosecond laser absorption in fused silica numerical and experimental investigation
... Femtosecond laser absorption in fused silica: Numerical and experimental investigation Alexander Q. Wu, Ihtesham H. Chowdhury, and Xianfan Xu * School of Mechanical Engineering, Purdue ... is increased. In this work, both experiments and numerical simulation of single pulse transmissivity are carried out to study how the ultrafast laser pulse is coupled into fuse...
Ngày tải lên: 06/05/2014, 08:55
plasma formation in fused silica induced by loosely focused femtosecond laser pulse
... effect and shrinkage of the laser beam diameter as shown in Fig. 3. The cumulative effect of defocusing and self-focusing results in the laser beam being focused behind the focal point as shown in ... good understanding of the laser beam propagation and absorption inside the transparent materials. The dynamics of femtosecond laser propagation in transpar- ent materia...
Ngày tải lên: 06/05/2014, 08:54
plasma formation in fused silica induced by loosely focused femtosecond laser pulse
... effect and shrinkage of the laser beam diameter as shown in Fig. 3. The cumulative effect of defocusing and self-focusing results in the laser beam being focused behind the focal point as shown in ... good understanding of the laser beam propagation and absorption inside the transparent materials. The dynamics of femtosecond laser propagation in transpar- ent materia...
Ngày tải lên: 06/05/2014, 08:58
molecular dynamics simulation of ultrafast laser ablation of fused silica film
... interaction between ultrafast laser pulses and fused sil- ica and the resulting ablation. The main goal of this study is to investigate the ultrafast laser ablation process of fused silica, and ... ultrafast laser ablation of fused silica film 851 obtained fused silica is analyzed and agrees well with that reported in the literature [11]. A thin film of fused sil...
Ngày tải lên: 06/05/2014, 08:54
control of current saturation and threshold voltage shift in indium oxide nanowire transistors with femtosecond laser annealing
... doping in the nearby semi- conductor region. Further investigation of the mechan- ism behind such annealing effects is interesting and ongoing. This study provides insights into the contact- dominated ... of femtosecond laser annealing on fully transparent inverters consisting of two In 2 O 3 NWTs, and show that their current saturation is improved (3- 7 times increase in outpu...
Ngày tải lên: 06/05/2014, 08:53
Tài liệu Báo cáo khoa học: Poly(silicate)-metabolizing silicatein in siliceous spicules and silicasomes of demosponges comprises dual enzymatic activities (silica polymerase and silica esterase) doc
... cations. Free silica ⁄ silicate is found both in the crystalline state (such as quartz) and in the amorphous state (such as opal). Silica ⁄ silicate is widely used in industry and medicine for the ... polymerizing growth of the silica chains, mediated by the silica polymerase activity of silicatein, involves stepwise addition of single silica monomeric units. This finding i...
Ngày tải lên: 18/02/2014, 16:20
Báo cáo " A numerical model for the simulation of wave dynamics in the surf zone and near coastal structures " pot
... Thus, thereisalargetimevariationofTKE, and the peaks in turbulence intensity and suspended sediment concentration coincide with incoming waves. Accordingly, onshore transportofTKE and suspended sedimentby incoming ... depth integ rated Boussinesq approx im at ion equations, including bottom friction and wave energy loss due to wave breaking and s...
Ngày tải lên: 28/03/2014, 15:20
heat transfer in femtosecond laser
... PROCESSING OF METAL 231 12. X. Xu, G. Chen, and K. H. Song, Experimental and Numerical Investigation of Heat Transfer and Phase Change Phenomena during Excimer Laser Interaction with Nickel, Int. ... is solved numerically to predict heating, melting, and evaporation of metal under femtosecond laser irradiation. Kinetic relations at the phase-change interfaces are included...
Ngày tải lên: 06/05/2014, 08:55
mechanisms of absorption in pulsed excimer laser induced plasma
... of the laser beam in the laser- induced plasma plume is essential for controlling the interaction of the laser and the materials being used, and for optimizing the high-power laser processes. The ... intensities in the range 90–400 MW/cm 2 . PACS: 52.40.Nk; 52.50.Jm; 79.20.Ds High-power excimer lasers are being used in a variety of applications, including pulsed laser depos...
Ngày tải lên: 06/05/2014, 08:55