Tightly focused femtosecond laser pulse in air: from filamentation to breakdown.
作者： Xiao-Long Liu , Xin Lu , Xun Liu , Ting-Ting Xi , Feng Liu
DOI: 10.1364/OE.18.026007
关键词:
摘要: The propagation of tightly focused femtosecond laser pulse with numerical aperture 0.12 in air is investigated experimentally. formation and evolution the filament bunch are recorded by time-resolved shadowgraph energy from 2.4 mJ to 47 mJ. distribution electron density breakdown area retrieved using Nomarski interferometer. It found that intensity clamping during filamentation effect still play a role even under strong external focusing. some interaction zones higher than 3×1019 cm-3, which indicates each molecule there ionized.
osapublishing.org
harvard.edu参考文章(31)
CY Chien, B La Fontaine, A Desparois, Z Jiang, TW Johnston, JC Kieffer, H Pépin, F Vidal, HP Mercure, None, Single-shot chirped-pulse spectral interferometry used to measure the femtosecond ionization dynamics of air. Optics Letters. ,vol. 25, pp. 578- 580 ,(2000) , 10.1364/OL.25.000578
J. Bernhardt, W. Liu, S.L. Chin, R. Sauerbrey, Pressure independence of intensity clamping during filamentation: theory and experiment Applied Physics B. ,vol. 91, pp. 45- 48 ,(2008) , 10.1007/S00340-008-2956-Z
Francis Théberge, Weiwei Liu, Patrick Tr. Simard, Andreas Becker, See Leang Chin, Plasma density inside a femtosecond laser filament in air: strong dependence on external focusing. Physical Review E. ,vol. 74, pp. 036406- 036406 ,(2006) , 10.1103/PHYSREVE.74.036406
Jiansheng Liu, Zuoliang Duan, Zhinan Zeng, Xinhua Xie, Yunpei Deng, Ruxin Li, Zhizhan Xu, See Leang Chin, Time-resolved investigation of low-density plasma channels produced by a kilohertz femtosecond laser in air Physical Review E. ,vol. 72, pp. 026412- ,(2005) , 10.1103/PHYSREVE.72.026412
Rafael R. Gattass, Eric Mazur, Femtosecond laser micromachining in transparent materials Nature Photonics. ,vol. 2, pp. 219- 225 ,(2008) , 10.1038/NPHOTON.2008.47
Jérôme Kasparian, S. Skupin, L. Bergé, Jean-Pierre Wolf, R. Nuter, Ultrashort filaments of light in weakly ionized, optically transparent media Reports on Progress in Physics. ,vol. 70, pp. 1633- 1713 ,(2007) , 10.1088/0034-4885/70/10/R03
A. Becker, N. Aközbek, K. Vijayalakshmi, E. Oral, C.M. Bowden, S.L. Chin, Intensity clamping and re-focusing of intense femtosecond laser pulses in nitrogen molecular gas Applied Physics B. ,vol. 73, pp. 287- 290 ,(2001) , 10.1007/S003400100637
A. Braun, G. Korn, X. Liu, D. Du, J. Squier, G. Mourou, Self-channeling of high-peak-power femtosecond laser pulses in air Optics Letters. ,vol. 20, pp. 73- 75 ,(1995) , 10.1364/OL.20.000073
L. Sudrie, A. Couairon, M. Franco, B. Lamouroux, B. Prade, S. Tzortzakis, A. Mysyrowicz, Femtosecond laser-induced damage and filamentary propagation in fused silica. Physical Review Letters. ,vol. 89, pp. 186601- 186601 ,(2002) , 10.1103/PHYSREVLETT.89.186601
Xian-Fang Li, Li Huang, Yong Huang, A new Abel inversion by means of the integrals of an input function with noise Journal of Physics A. ,vol. 40, pp. 347- 360 ,(2007) , 10.1088/1751-8113/40/2/012