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Zhao C, Degallaix J, Ju L, et al. Compensation of strong thermal lensing in high-optical-power cavities. Phys Rev Lett. 2006;96(23):231101doi: 10.1103/PhysRevLett.96.231101.
Zhao, C., Degallaix, J., Ju, L., Fan, Y., Blair, D. G., Slagmolen, B. J., Gray, M. B., Lowry, C. M., McClelland, D. E., Hosken, D. J., Mudge, D., Brooks, A., Munch, J., Veitch, P. J., Barton, M. A., & Billingsley, G. (2006). Compensation of strong thermal lensing in high-optical-power cavities. Physical review letters, 96(23), 231101. https://doi.org/10.1103/PhysRevLett.96.231101
Zhao, C, et al. "Compensation of strong thermal lensing in high-optical-power cavities." Physical review letters vol. 96,23 (2006): 231101. doi: https://doi.org/10.1103/PhysRevLett.96.231101
Zhao C, Degallaix J, Ju L, Fan Y, Blair DG, Slagmolen BJ, Gray MB, Lowry CM, McClelland DE, Hosken DJ, Mudge D, Brooks A, Munch J, Veitch PJ, Barton MA, Billingsley G. Compensation of strong thermal lensing in high-optical-power cavities. Phys Rev Lett. 2006 Jun 16;96(23):231101. doi: 10.1103/PhysRevLett.96.231101. Epub 2006 Jun 12. PMID: 16803364.
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Phys Rev Lett. 2006 Jun 16;96(23):231101. doi: 10.1103/PhysRevLett.96.231101. Epub 2006 Jun 12.

Compensation of strong thermal lensing in high-optical-power cavities.

Physical review letters

C Zhao, J Degallaix, L Ju, Y Fan, D G Blair, B J J Slagmolen, M B Gray, C M Mow Lowry, D E McClelland, D J Hosken, D Mudge, A Brooks, J Munch, P J Veitch, M A Barton, G Billingsley

Affiliations

  1. School of Physics, The University of Western Australia, 35 Stirling Highway, Nedlands, Western Australia 6009, Australia.

PMID: 16803364 DOI: 10.1103/PhysRevLett.96.231101

Abstract

In an experiment to simulate the conditions in high optical power advanced gravitational wave detectors, we show for the first time that the time evolution of strong thermal lenses follows the predicted infinite sum of exponentials (approximated by a double exponential), and that such lenses can be compensated using an intracavity compensation plate heated on its cylindrical surface. We show that high finesse approximately 1400 can be achieved in cavities with internal compensation plates, and that mode matching can be maintained. The experiment achieves a wave front distortion similar to that expected for the input test mass substrate in the Advanced Laser Interferometer Gravitational Wave Observatory, and shows that thermal compensation schemes are viable. It is also shown that the measurements allow a direct measurement of substrate optical absorption in the test mass and the compensation plate.

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