Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/95192
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Type: | Journal article |
Title: | Modeling thermoelastic distortion of optics using elastodynamic reciprocity |
Author: | King, E. Levin, Y. Ottaway, D. Veitch, P. |
Citation: | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2015; 92(2):022005-1-022005-8 |
Publisher: | American Physical Society |
Issue Date: | 2015 |
ISSN: | 1550-2368 1550-2368 |
Statement of Responsibility: | Eleanor King, Yuri Levin, David Ottaway, and Peter Veitch |
Abstract: | Thermoelastic distortion resulting from optical absorption by transmissive and reflective optics can cause unacceptable changes in optical systems that employ high-power beams. In advanced-generation laser-interferometric gravitational wave detectors, for example, optical absorption is expected to result in wavefront distortions that would compromise the sensitivity of the detector, thus necessitating the use of adaptive thermal compensation. Unfortunately, these systems have long thermal time constants, and so predictive feed-forward control systems could be required, but the finite-element analysis is computationally expensive. We describe here the use of the Betti-Maxwell elastodynamic reciprocity theorem to calculate the response of linear elastic bodies (optics) to heating that has arbitrary spatial distribution. We demonstrate, using a simple example, that it can yield accurate results in computational times that are significantly less than those required for finite-element analyses. |
Rights: | © 2015 American Physical Society |
DOI: | 10.1103/PhysRevD.92.022005 |
Published version: | http://dx.doi.org/10.1103/physrevd.92.022005 |
Appears in Collections: | Aurora harvest 7 IPAS publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_95192.pdf | Published version | 1.16 MB | Adobe PDF | View/Open |
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