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 A/730, where λ= 800 nm.
Original language | English |
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Pages (from-to) | 355-364 |
Number of pages | 10 |
Journal | Applied Optics |
Volume | 48 |
Issue number | 2 |
DOIs | |
Publication status | Published - 10 Jan 2009 |