Dear colleagues,

I would like to know the optical properties of different materials and
gases. More precisely, I am looking for the complex refractive index (n and
k) of the following materials/gases around the wavelength of 4.26
micrometers:

- Carbone dioxide CO2,
- Corning pyrex glass 7740,
- Silicon dioxide SiO2 (thermally grown),
- Silicon nitride SiN,
- Silicon
- Air

Does anyone know where I could find such information?

Thank you.
_________________________________________

Thierry Corman
Instrumentation Laboratory
Department of Signals, Sensors and Systems
Royal Institute of Technology
SE-100 44 Stockholm, Sweden

Tel:    +46 8 790 77 89
Fax:    +46 8 10 08 58
e-mail: corman@s3.kth.se
http://www.s3.kth.se/instrlab/
_________________________________________