Modeling a Partially Coherent Source

How can I model a partially coherent source in FRED?

A partially coherent source can be achieved by simulating an extended source as a collection of point sources emanating from different locations (for finite conjugates) or directions (for infinite conjugates).  Each individual source will be coherent, but incoherent, in relation to all other sources. In FRED, this is achieved by using different wavelengths.  An example of implementing a partially coherent source can be found in the FRED Sample Files folder here: <installation dir>\Resources\Samples\Tutorials & Examples\examplePartialCoherenceDiffractometer.frd.

Note:  For more information, please read our related article: Michelin Stellar Interferometer