Hi, I am currently trying to take the FFT of a gaussian pulse, put a phase mask (1D for now) onto it such as a linear phase mask, quadratic phase mask etc. I can get the linear phase mask to work (I know it is working since when I fft than ifft I get the same pulse back but shifted). When I try to apply any other phase mask, my pulse vanishes! Could this be related to wrapping or unwrapping of my phase?

Thanks for your ideas...

-Ben