A novel technique for finely controlled near-infrared beam transmission of titania
Abstract
The paper discusses a novel method of controlling near-infrared beam transmissions through a silica-titania dual layer. It was found that a KrF excimer laser was able to change the transmission characteristics of the dual layer coatings over a wide range from 0.1 to 12 dB at a small step of less than 1 dB for the transmission at both 850 and 1550 nm. The controlled beam transmission was attributed to the controllable laser-effected darkening of the titania layer.
The developed method can be applied for the manufacture of adjustable filters widely used for optical communication systems.- Publication:
-
Applied Surface Science
- Pub Date:
- January 2004
- DOI:
- 10.1016/j.apsusc.2003.08.010
- Bibcode:
- 2004ApSS..222..110Z
- Keywords:
-
- Laser-evoked coloration;
- Laser-induced darkening;
- Titania coating;
- Near-infrared transmission