|Document ID (ISN)||104207|
|Convention or series no.
||Werhahn O., Schirmacher A., Schmiedel M., Sutter E., Nevejina-Sturhan A., Lecher H., Siegner U., Ott G., Janssen M.
Bundesanstalt für Arbeitsschutz und Arbeitsmedizin
||Laser filters for the ns- and fs regime
||Laserschutzfilter für den ns- und fs-Bereich [in German]|
||Wirtschaftsverlag NW, Postfach 10 11 10, 27511 Bremerhaven, Germany, 2003. 126p. Illus. 28 ref. Price: EUR 13.00.
||Non-linear interactions between light and matter such as induced transmission can impair the protective effect of filters against laser radiation. When these filters are exposed to short high-energy laser impulses, this effect induces a transient increase in the degree of spectral transmission, causing eye irradiation in excess of admissible levels, possibly resulting in lesions. This study examines the behaviour of filters against laser rays when exposed to intensive laser impulses of duration in the nanosecond (ns) and femtosecond (fs) orders of magnitude. The induced transmission effect was also observed for very short impulses of the order of femtoseconds. The residual protective effects of these types of filters are reviewed. The influence of filter temperature on induced transmission is also discussed.
||radiation protection; filter glasses; lasers
||light transmission factor; Germany; eye injuries; permissible radiation doses; irradiation
||E - Books, reports, proceedings
|Country / State or Province||Germany|
|Broad subject area(s)
||Face and eye protection