Plasma Absorption of Femtosecond Laser Pulses in Dielectrics

[+] Author and Article Information
C. H. Fan, J. Sun, J. P. Longtin

Department of Mechanical Engineering, State University of New York at Stony Brook, Stony Brook, NY 11794-2300

J. Heat Transfer 124(2), 275-283 (Oct 22, 2001) (9 pages) doi:10.1115/1.1445135 History: Received May 02, 2001; Revised October 22, 2001
Copyright © 2002 by ASME
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Time-dependent breakdown region induced by long laser pulses
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Pulse propagation and corresponding plasma absorption region: (a) intensity increase as beam diameter decreases near focal region; and (b) power variation and plasma formation region
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Schematic of a Gaussian pulse composed of pulse strips
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Plasma formation location versus formation time
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Time-dependent pulse profile with plasma absorption in water (τp=300 fs): (a) t=tF0, (b) t=tF0+5τp, (c) t=tF0+10τp, and (d) t=−t0.
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Time-dependent transmission for different β(τp=300 fs)




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