Thermal regime of laser ablation of metals by ultrashort pulses of low fluence

被引：0

作者：

Isakov, VA ^{[1
]}

Afanasiev, YV ^{[1
]}

Chichkov, BN ^{[1
]}

Kanavin, AP ^{[1
]}

Uryupin, SA ^{[1
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 117924, Russia

来源：

HIGH-POWER LASER ABLATION II | 2000年 / 3885卷

关键词：

laser ablation; thermal mode; two-temperature model;

D O I：

10.1117/12.376994

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Thermal ablation of a metal surface by low-energy ultrashort laser pulses is considered theoretically. The temporal dynamics of the surface electron and lattice temperatures is studied within the framework of the two-temperature model and for different temperature dependences of the characteristics of the metal (electron-relaxation time, heat capacity, thermal conductivity). The approximation of evaporation into a vacuum is used to determine the ablation depth. Analytical expressions for the ablation-threshold fluence F-th as well as the threshold values of the lattice temperature T-th(F-th) and the characteristic time of lattice temperature decay t(d)(F-th) are obtained. This analytical description is in satisfactory agreement with particular numerical calculations.

引用

页码：481 / 490

页数：10

共 13 条

[1] Ablation of metals by ultrashort laser pulses: Theoretical modeling and computer simulations [J].

Afanasiev, YV ;

Chichkov, BN ;

Demchenko, NN ;

Isakov, VA ;

Zavestovskaya, IN .

JOURNAL OF RUSSIAN LASER RESEARCH, 1999, 20 (02) :89-115

[2]

Anisimov S. I., 1975, SOV PHYS JETP, V39, P375, DOI DOI 10.1016/J.JMATPROTEC.2009.05.031

[3]

ANISIMOV SI, 1970, ACTION HIGH POWER RA

[4]

Chichkov BN, 1996, APPL PHYS A-MATER, V63, P109, DOI 10.1007/BF01567637

[5]

KAGANOV MI, 1957, ZH EKSP TEOR FIZ, V4, P173

[6] Heat transport in metals irradiated by ultrashort laser pulses [J].

Kanavin, AP ;

Smetanin, IV ;

Isakov, VA ;

Afanasiev, YV ;

Chichkov, BN ;

Wellegehausen, B ;

Nolte, S ;

Momma, C ;

Tunnermann, A .

PHYSICAL REVIEW B, 1998, 57 (23) :14698-14703

[7]

Kruger J., 1995, P SPIE, V2403

[8]

LANDAU LD, 1995, STAT PHYSICS 1

[9] Short-pulse laser ablation of solid targets [J].

Momma, C ;

Chichkov, BN ;

Nolte, S ;

vonAlvensleben, F ;

Tunnermann, A ;

Welling, H ;

Wellegehausen, B .

OPTICS COMMUNICATIONS, 1996, 129 (1-2) :134-142

[10]

NOLTE S, 1997, JOSA, V14, P27

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