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Subject: Re: Interference filters coating
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Date: 02/23/02 at 8:14 AM
Posted by: Vladimir Tchoutko
In Reply to: Interference filters coating posted by Hemang Jesrani / Astro Optics Pvt. Ltd. on 02/22/02 at 2:28 AM:
Theoretically you can use any couple of materials with high and low indexes but all depend on your requirements (spectral and environment). So you must choose the best ones for your goals. If you have difference between the real spectra and designed one it may be result as coating errors, as design errors, as data errors (dispersion you have used in design is not a dispersion of real thin film), as result of stresses and/or moisture absorbtion in deposited stack. What is your requirements and what is the spectral errors?
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