AI Article Synopsis
- Wavefront distortion caused by absorption in the mirrors' substrates and coatings can affect the performance of advanced gravitational wave interferometers.
- The research presents the first direct spatially-resolved measurement of this distortion in a high optical power setup.
- The measurement utilized an ultrahigh sensitivity Hartmann wavefront sensor that achieved a sensitivity of lambda/730, with lambda being 800 nm.
Article Abstract
Wavefront distortion due to absorption in the substrates and coatings of mirrors in advanced gravitational wave interferometers has the potential to compromise the operation and sensitivity of these interferometers [Opt. Lett.29, 2635-2637 (2004)]. We report the first direct spatially-resolved measurement, to our knowledge, of such wavefront distortion in a high optical power cavity. The measurement was made using an ultrahigh sensitivity Hartmann wavefront sensor on a dedicated test facility. The sensitivity of the sensor was lambda/730, where lambda=800 nm.
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| http://dx.doi.org/10.1364/ao.48.000355 | DOI Listing |
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