In this paper, we report the heat generation and temperature field in a multilayer device consisting of thin and weakly absorbing materials subject to pico-second to nano-second pulsed-laser heating. The interference effects due to the internal reflection and refraction are considered. A tracking method based on electromagnetic optics and wave optics is used to determine the two-dimensional electrical and magnetic fields. These fields are then used to calculate the heat generation and the accompanying temperature distribution. For demonstration, we apply this method to determine the temperature field in a ZnSe interference filter subject to inclined laser incidence on its side. The simulation results show strong localized heating in a narrow region along the side where laser power is incident. The localized heating produces several high power spots, aligned obliquely to the side surface. The results show that the pure absorption model is not valid for even small incident angles. Surface absorption may be a valid approximation but the heat flux distribution is not uniform.
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ASME 2003 Heat Transfer Summer Conference
July 21–23, 2003
Las Vegas, Nevada, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-3695-9
PROCEEDINGS PAPER
Transient Thermal Modeling of Pulsed Laser Irradiation of a Low Absorbing Multilayer Device Using a 2D Model Available to Purchase
D. Shao,
D. Shao
University of Colorado at Boulder, Boulder, CO
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R. L. Mahajan
R. L. Mahajan
University of Colorado at Boulder, Boulder, CO
Search for other works by this author on:
D. Shao
University of Colorado at Boulder, Boulder, CO
R. L. Mahajan
University of Colorado at Boulder, Boulder, CO
Paper No:
HT2003-47076, pp. 79-86; 8 pages
Published Online:
December 17, 2008
Citation
Shao, D, & Mahajan, RL. "Transient Thermal Modeling of Pulsed Laser Irradiation of a Low Absorbing Multilayer Device Using a 2D Model." Proceedings of the ASME 2003 Heat Transfer Summer Conference. Heat Transfer: Volume 3. Las Vegas, Nevada, USA. July 21–23, 2003. pp. 79-86. ASME. https://doi.org/10.1115/HT2003-47076
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