Ultrafast thermalization characteristics in Au film irradiated by temporally shaped femtosecond laser pulses

Du, Guangqing; Chen, Feng; Yang, Qing; Si, Jinhai; Hou, Xun

doi:10.1016/j.optcom.2010.09.061

Cited by 14 publications

(2 citation statements)

References 24 publications

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“…Laser induced periodic surface structures (LIPSSs), or ripples, have been widely studied because of their potential interest in both scientific and practical aspects [1][2][3][4]. More recently, trains of temporally shaped femtosecond pulses, namely multi-pulse sequences with various separations, have attracted great attention in the laser patterning field [5][6][7][8][9]. High ablation efficiency and reduced thermal recasting can be achieved by applying a train of shaped pulses.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast electron dynamics manipulation of laser induced periodic ripples via a train of shaped pulses

Du¹,

Yang²,

Chen³

et al. 2013

Laser Phys. Lett.

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We present the electron dynamics manipulation of laser induced periodic nanoripples on fused silica via a train of shaped femtosecond pulses. The non-linear ionization used for supporting the surface plasmon polaritons (SPPs) is taken into account in the analysis of the ripple dynamics. It is revealed that the ripple periods are closely related to both the pulse-to-pulse separation and the laser fluence. The result is attributed to the ultrafast dynamics manipulation for the SPP dispersion wavelength through the unusual ionization arising via a train of shaped pulses. This study should be helpful for the fundamental understanding of the ripple formation mechanism arising from a train of shaped pulses, used for controlling the ripple features.

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Section: Introductionmentioning

confidence: 99%

Ultrafast electron dynamics manipulation of laser induced periodic ripples via a train of shaped pulses

Du¹,

Yang²,

Chen³

et al. 2013

Laser Phys. Lett.

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“…A pulse train generally consists of many 'trains' with a repetition rate of KHz to MHz, in which each train may contain several pulses at a separation time of 100 fs to hundreds of picoseconds (ps). In theoretical study, two-temperature models (TTM) (Anisimov et al, 1974;Chen and Beraun, 2001) are often employed to investigate the effects of pulse train on laser-material interactions (Huang et al, 2011;Jiang and Tsai, 2007;Sim et al, 2010;Jiang and Tsai, 2005;Li et al, 2009;Stoian et al, 2002;Chowdhury et al, 2003;Du et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer in Metal Films Irradiated by Combined Nanosecond Laser Pulse and Femtosecond Pulse Train

Chen¹,

Ren²,

Zhang³

2012

Frontiers in Heat and Mass Transfer

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Heat transfer in a copper film irradiated by a femtosecond (fs) laser pulse train and by an integrated dual laser beam of a nanosecond pulse with a fspulse train was studied using the semi-classical two-temperature model. The critical point model with three Lorentzian terms was employed to characterize transient optical properties for the laser energy deposition. The effects of pulse number and separation time on the thermal response were investigated. The results showed that with the same total energy in a fs-pulse train, more pulses for shorter separation time, e.g., 1 ps, and fewer pulses for longer separation time, e.g., 100 ps, can achieve higher lattice temperature. For a dual laser beam, the lattice temperature can be increased by setting the pulse separation time as short as possible, e.g., 1 ps.

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Femtosecond laser processing of fused silica and aluminum based on electron dynamics control by shaping pulse trains

Leng

Jiang

et al. 2012

Appl. Phys. A

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Ultrafast thermalization characteristics in Au film irradiated by temporally shaped femtosecond laser pulses

Cited by 14 publications

References 24 publications

Ultrafast electron dynamics manipulation of laser induced periodic ripples via a train of shaped pulses

Ultrafast electron dynamics manipulation of laser induced periodic ripples via a train of shaped pulses

Heat Transfer in Metal Films Irradiated by Combined Nanosecond Laser Pulse and Femtosecond Pulse Train

Femtosecond laser processing of fused silica and aluminum based on electron dynamics control by shaping pulse trains

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