Optical Sciences

Biomolecules and nanostructures

The Optical Sciences group studies the interaction of light and matter. Our current focus is on detection and sensing/imaging with an emphasis on the development of integrated photonics. We are part of Twente University's Department of Science and Technology and member of the MESA+ institute.


Large-area two-dimensional silicon photonic crystals for infrared light fabricated with laser interference lithography

(full pdf)

L Prodan, T G Euser, H AGM van Wolferen, C Bostan, R M de Ridder, R Beigang, K-J Boller and L Kuipers
vol 15 issue 5 p639 - 642 may 2004

We report on the production of large-area 2D photonic crystals from high-index material with laser interference lithography (LIL). A new image reversal photoresist is used in combination with an anti-reflection coating to suppress undesired reflections. The photonic crystals possess a cubic pattern of air holes in a 500 nm silicon layer and cover an area of 1 cm2.
Printable version