This information should be available in a book by Palik, called Optical Properties of......, or Handbook of Optical Constants, or some-such similar title. The essential information is that the book is by Palik, so with any decent library cataloguing system, you should be able to find it. ****************************** * Karl H. Cazzini (Ph.D) * * Conifer Group & Associates * * 116 Cochituate Road * * Framingham MA 01701 * * USA * * * * Tel(W): (508) 620 8845 * * Fax(W): (508) 620 8830 * * Tel(H): (508) 875 2009 * ****************************** -----Original Message----- From: mems-mgr@ISI.EDU [mailto:mems-mgr@ISI.EDU]On Behalf Of Thierry Corman Sent: Tuesday, January 12, 1999 6:14 AM To: MEMS@ISI.EDU Subject: Optical properties n, k 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/ _________________________________________