Comparison of the thermal effects of the transport of a short-pulse laser and a multi-pulse laser through a participating medium

Subhash C. Mishra; R. Muthukumaran; S. Maruyama

doi:10.1016/j.ijheatmasstransfer.2012.05.047

Comparison of the thermal effects of the transport of a short-pulse laser and a multi-pulse laser through a participating medium

Subhash C. Mishra, R. Muthukumaran, S. Maruyama

Complex Flow Research Division

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

4 Citations (Scopus)

Abstract

Temporal signals resulting from the boundaries of a participating medium subjected to a short-pulse laser source are investigated. Cases of both a single as well as a pulse-train consisting of multiple pulses are considered. Temporal variation of the incident laser pulse can be a step or a Gaussian function of time. Temporal evolutions of transmittance and reflectance signals, and incident radiation at various locations in the planar medium are studied for a wide range of the values of the extinction coefficient. The problem is analyzed using both the finite volume method and the discrete ordinates method. In all cases, results of both the methods are compared. An excellent agreement has been found.

Original language	English
Pages (from-to)	5583-5596
Number of pages	14
Journal	International Journal of Heat and Mass Transfer
Volume	55
Issue number	21-22
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2012.05.047
Publication status	Published - 2012 Oct 1

Keywords

Discrete ordinates method
Finite volume method
Participating medium
Short-pulse laser
Thermal radiation

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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abstract = "Temporal signals resulting from the boundaries of a participating medium subjected to a short-pulse laser source are investigated. Cases of both a single as well as a pulse-train consisting of multiple pulses are considered. Temporal variation of the incident laser pulse can be a step or a Gaussian function of time. Temporal evolutions of transmittance and reflectance signals, and incident radiation at various locations in the planar medium are studied for a wide range of the values of the extinction coefficient. The problem is analyzed using both the finite volume method and the discrete ordinates method. In all cases, results of both the methods are compared. An excellent agreement has been found.",

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