Laser shortpulse heating: Determination of lagging time due to difference pulse parameters

B. S. Yilbas; S. J. Hyder; M. Kalyon

doi:10.1016/S0735-1933(01)00285-8

Laser shortpulse heating: Determination of lagging time due to difference pulse parameters

B. S. Yilbas^*, S. J. Hyder, M. Kalyon

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The governing equations of energy transport during laser shortpulse heating is solved analytically for heating periods less or comparable to thermalization time of the substrate material. Since the lattice site temperature rise is considerably low in the time domain considered, the diffusional energy term in the governing equation is neglected. The effect of laser pulse shape parameter on the electron and lattice site temperature rise is investigated. It is found that rate of electron temperature rise in the heating period is lower than that corresponding to longer heating periods. The temporal behavior of electron and lattice site temperatures are similar, provided that the rise of lattice site temperature is low, which is in the order of 1.5 K after 4.5 × 10^-12 s heating period. The lagging time between electron and lattice site temperature is more pronounced as the pulse parameter (β/γ) increases.

Original language	English
Pages (from-to)	815-822
Number of pages	8
Journal	International Communications in Heat and Mass Transfer
Volume	28
Issue number	6
DOIs	https://doi.org/10.1016/S0735-1933(01)00285-8
State	Published - Aug 2001

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Chemical Engineering
Condensed Matter Physics

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@article{965c43efd05b44faa64ba54ca48d882e,

title = "Laser shortpulse heating: Determination of lagging time due to difference pulse parameters",

abstract = "The governing equations of energy transport during laser shortpulse heating is solved analytically for heating periods less or comparable to thermalization time of the substrate material. Since the lattice site temperature rise is considerably low in the time domain considered, the diffusional energy term in the governing equation is neglected. The effect of laser pulse shape parameter on the electron and lattice site temperature rise is investigated. It is found that rate of electron temperature rise in the heating period is lower than that corresponding to longer heating periods. The temporal behavior of electron and lattice site temperatures are similar, provided that the rise of lattice site temperature is low, which is in the order of 1.5 K after 4.5 × 10-12 s heating period. The lagging time between electron and lattice site temperature is more pronounced as the pulse parameter (β/γ) increases.",

author = "Yilbas, \{B. S.\} and Hyder, \{S. J.\} and M. Kalyon",

year = "2001",

month = aug,

doi = "10.1016/S0735-1933(01)00285-8",

language = "English",

volume = "28",

pages = "815--822",

journal = "International Communications in Heat and Mass Transfer",

issn = "0735-1933",

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TY - JOUR

T1 - Laser shortpulse heating

T2 - Determination of lagging time due to difference pulse parameters

AU - Yilbas, B. S.

AU - Hyder, S. J.

AU - Kalyon, M.

PY - 2001/8

Y1 - 2001/8

N2 - The governing equations of energy transport during laser shortpulse heating is solved analytically for heating periods less or comparable to thermalization time of the substrate material. Since the lattice site temperature rise is considerably low in the time domain considered, the diffusional energy term in the governing equation is neglected. The effect of laser pulse shape parameter on the electron and lattice site temperature rise is investigated. It is found that rate of electron temperature rise in the heating period is lower than that corresponding to longer heating periods. The temporal behavior of electron and lattice site temperatures are similar, provided that the rise of lattice site temperature is low, which is in the order of 1.5 K after 4.5 × 10-12 s heating period. The lagging time between electron and lattice site temperature is more pronounced as the pulse parameter (β/γ) increases.

AB - The governing equations of energy transport during laser shortpulse heating is solved analytically for heating periods less or comparable to thermalization time of the substrate material. Since the lattice site temperature rise is considerably low in the time domain considered, the diffusional energy term in the governing equation is neglected. The effect of laser pulse shape parameter on the electron and lattice site temperature rise is investigated. It is found that rate of electron temperature rise in the heating period is lower than that corresponding to longer heating periods. The temporal behavior of electron and lattice site temperatures are similar, provided that the rise of lattice site temperature is low, which is in the order of 1.5 K after 4.5 × 10-12 s heating period. The lagging time between electron and lattice site temperature is more pronounced as the pulse parameter (β/γ) increases.

UR - https://www.scopus.com/pages/publications/0035415420

U2 - 10.1016/S0735-1933(01)00285-8

DO - 10.1016/S0735-1933(01)00285-8

M3 - Article

AN - SCOPUS:0035415420

SN - 0735-1933

VL - 28

SP - 815

EP - 822

JO - International Communications in Heat and Mass Transfer

JF - International Communications in Heat and Mass Transfer

IS - 6

ER -

Laser shortpulse heating: Determination of lagging time due to difference pulse parameters

Abstract

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