Measurement of a low-absorption sample of OH-reduced fused silica

Hild, S. et al. (2006) Measurement of a low-absorption sample of OH-reduced fused silica. Applied Optics, 45(28), pp. 7269-7272. (doi: 10.1364/AO.45.007269)

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Low-absorption optics made of OH-reduced fused silica are a key technology for future gravitational wave detectors such as the Advanced LIGO. We developed a sensitive method to measure the absorption inside the beam splitter of the GEO 600, taking advantage of the effect of thermal lensing. Using this method, we derived a bulk absorption of less than 0.25 ppm/cm for a piece of Suprasil 311 SV at a wavelength of 1064 nm. To the best of our knowledge, this is the lowest value of light absorption inside fused silica reported so far in the literature.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Hough, Professor James and Strain, Professor Kenneth
Authors: Hild, S., Luck, H., Winkler, W., Strain, K., Grote, H., Smith, J., Malec, M., Hewitson, M., Willke, B., Hough, J., and Danzmann, K.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Applied Optics

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