Agrawal, Arti ; Sharma, Anurag (2004) Perfectly matched layer in numerical wave propagation: factors that affect its performance Applied Optics, 43 (21). pp. 4225-4231. ISSN 1559-128X
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Official URL: http://www.opticsinfobase.org/ao/abstract.cfm?URI=...
Related URL: http://dx.doi.org/10.1364/AO.43.004225
Abstract
The perfectly matched layer (PML) boundary condition is generally employed to prevent spurious reflections from numerical boundaries in wave propagation methods. However, PML requires additional computational resources. We have examined the performance of the PML by changing the distribution of sampling points and the PML's absorption profile with a view to optimizing the PML's efficiency. We used the collocation method in our study. We found that equally spaced field sampling points give better absorption of beams under both optimal and nonoptimal conditions for low PML widths. At high PML widths, unequally spaced basis points may be equally efficient. The efficiency of various PML absorption profiles, including new ones, has been studied, and we conclude that for better numerical efficiency it is important to choose an appropriate profile.
Item Type: | Article |
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Source: | Copyright of this article belongs to Optical Society of America. |
ID Code: | 48452 |
Deposited On: | 14 Jul 2011 08:21 |
Last Modified: | 14 Jul 2011 08:21 |
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