DIN EN ISO 21254-3:2011-10

This part of ISO 21254 specifies two methods of verifying the power density (energy density) handling capability of both coated and uncoated optical surfaces. The first method provides a rigorous test that fulfils the requirements at a specified confidence level in the knowledge of potential defects. The second method provides a simple, and hence inexpensive, test for an empirically derived test level. These methods will give consistent measurement results and can therefore be used for acceptance testing or to produce results which can be compared between test laboratories. These methods are applicable to all combinations of laser wavelengths and pulse lengths. Comparison of laser damage threshold data can, however, be misleading unless the measurements have been carried out at identical wavelengths and pulse lengths. The Committee responsible for this standard is NA 027-01-18 AA "Laser" ("Laser") of the Optics and Precision Mechanics Standards Committee at DIN.