Time-resolved study of laser-induced disorder of Si surfaces.
作者： H. W. K. Tom , G. D. Aumiller , C. H. Brito-Cruz
DOI: 10.1103/PHYSREVLETT.60.1438
关键词: Condensed matter physics 、 Electronic structure 、 Excited state 、 Molecular physics 、 Solid-state physics 、 Femtosecond 、 Materials science 、 Relaxation (NMR) 、 Laser 、 Excitation 、 Phase (matter)
摘要: Optical second-harmonic studies show that the electronic structure in top 75\char21{}130 A\r{} of a crystalline Si surface loses cubic order only 150 fsec after is excited by an intense 100-fsec optical pulse. This suggests atomic disorder can be induced directly excitation, before material becomes vibrationally excited. In contrast, properties equilibrium molten phase are not obtained for several hundreds femtoseconds.
harvard.edu
sci-hub.se 参考文章(12)
J.A. Van Vechten, R. Tsu, F.W. Saris, Nonthermal pulsed laser annealing of Si; plasma annealing Physics Letters A. ,vol. 74, pp. 422- 426 ,(1979) , 10.1016/0375-9601(79)90242-1
A. M. Malvezzi, N. Bloembergen, C. Y. Huang, Time-resolved picosecond optical measurements of laser-excited graphite Physical Review Letters. ,vol. 57, pp. 146- 149 ,(1986) , 10.1103/PHYSREVLETT.57.146
J. M. Liu, H. Kurz, N. Bloembergen, Picosecond time‐resolved plasma and temperature‐induced changes of reflectivity and transmission in silicon Applied Physics Letters. ,vol. 41, pp. 643- 646 ,(1982) , 10.1063/1.93611
L.‐A. Lompré, J.‐M. Liu, H. Kurz, N. Bloembergen, Optical heating of electron‐hole plasma in silicon by picosecond pulses Applied Physics Letters. ,vol. 44, pp. 3- 5 ,(1984) , 10.1063/1.94543
C. V. Shank, R. Yen, C. Hirlimann, Time-Resolved Reflectivity Measurements of Femtosecond-Optical-Pulse-Induced Phase Transitions in Silicon Physical Review Letters. ,vol. 50, pp. 454- 457 ,(1983) , 10.1103/PHYSREVLETT.50.454
C. V. Shank, R. Yen, C. Hirlimann, Femtosecond-Time-Resolved Surface Structural Dynamics of Optically Excited Silicon Physical Review Letters. ,vol. 51, pp. 900- 902 ,(1983) , 10.1103/PHYSREVLETT.51.900
HWK Tom, TF Heinz, YR Shen, None, Second-harmonic reflection from silicon surfaces and its relation to structural symmetry Physical Review Letters. ,vol. 51, pp. 1983- 1986 ,(1983) , 10.1103/PHYSREVLETT.51.1983
HWK Tom, CM Mate, XD Zhu, JE Crowell, TF Heinz, GA Somorjai, YR Shen, None, Surface studies by optical second-harmonic generation: The adsorption of O2, CO, and sodium on the Rh(111) surface Physical Review Letters. ,vol. 52, pp. 348- 351 ,(1984) , 10.1103/PHYSREVLETT.52.348
G. E. Jellison, D. H. Lowndes, Time‐resolved ellipsometry measurements of the optical properties of silicon during pulsed excimer laser irradiation Applied Physics Letters. ,vol. 47, pp. 718- 721 ,(1985) , 10.1063/1.96014
M. C. Downer, C. V. Shank, Ultrafast heating of silicon on sapphire by femtosecond optical pulses Physical Review Letters. ,vol. 56, pp. 761- 764 ,(1986) , 10.1103/PHYSREVLETT.56.761