V. Loriette et al., PROBING OF LOW-LOSS MATERIALS AT 1.064-MU-M FOR INTERFEROMETRIC GRAVITATIONAL-WAVES DETECTION, Journal de physique. IV, 4(C7), 1994, pp. 631-634
Within the framework of the Virgo project, characterisations of low-ab
sorption high reflectivity multilayers coatings by collinear mirage ef
fect at 1.064 mu m are reported. All the tested samples have absorptio
n losses lower than 20 ppm and the lowest observed average absorption
loss is 0.99 ppm.