Naslov
Metal-dielectric coatings for variable tranmission filters with wide rejection bands

Autori
Piegari, Angela ; Janicki, Vesna

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Advances in Optical Thin Films, Proceedings of SPIE, Vol. 5250 / Amra, Claude ; Kaiser, Norbert ; Macleod, H. Angus - Washington (MD) : SPIE, 2004, 343-348

Skup
SPIE International Symposium on Optical Systems Design

Mjesto i datum
Saint-Étienne, Francuska, 30.09.2003. - 03.10.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
optical coatings; transmission filters; variable filters; metal thin films

Sažetak
Metal-dielectric coatings are able to give high rejection in a wide wavelength range due to the reflection effect of metal layers. At the same time it is possible, according to the theory of induced transmission filters, to reach a quite high transmission peak at a single wavelength, starting from a metal layer and adding apropriate dielectric matching layers. Following this theoretical approach, narrow band-pass (10nm) filters having a peak transmission of 70% and a rejection out-band with extreme wavelengths in the ratio 2.5:1, are designed for the visible-near infrared spectrum. The low number of layers makes them interesting when a spatial variable filter has to be realized in a small dimension. Examples of their optical behavior at different wavelengths are reported.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA