Dear All,
I am looking for some software package to simulate:
- geometrical optics ray-tracing on analytical mirror surfaces (in 3 -
d) or curves (2 - d).
        A very simple software that just computes the direction of rays
is enough!
- phenomenological chemical etching of cavities
(keeping into account the shadowing effects
        on the radical flow, based on string method or other surface
advancement algorithm)
Since I cannot afford any commercial package (as OptiCAD or SPEEDIE or
SAMPLE) I would like
to know if anyone has developed
some simple code in Fortran of MatLAB or analogous that I could use.
Thank you very much

Spartaco Landi
PhD  Student
Microsystems & Nanotechnology Group
School of Industrial and Manufacturing Science
Cranfield University
BEDS - UK
[email protected]