Advanced Undergraduate Laboratory

Department of Physics

University of Toronto

FILM:  Thin Film Interference Filters

Interference filters are multilayer thin-film devices. They can be designed to function as an edge filter or bandpass filter. In either case, wavelength selection is based on the property of destructive light interference. This is the same principle underlying the operation of a Fabry-Perot interferometer.  

A set-up for this experiment is being created in MP245.  This lab is currently under development.

Write-Up in Web Format, Word Format, PDF Format.

(last write-up revision: August 2006)                                                    

 

Here is the PDF Write-Up for the second-year laboratory “Evaporation of Silver Films”.  This may be helpful in teaching you how to evaporate metals onto a glass substrate.

 

Theory behind interference filters with Java applet.

 

Physics Education article from 1976 in PDF Format – showing suggested analysis method once you have your own interference filter.