In a series of experiments we explore various aspects of femtosecond pulse shaping
by coherent filters engraved in a persistent spectral hole burning (PSHB) material. We have in
mind the coherent control of quantum systems, with high resolution and large number of
addressable spectral points. We examine the phase correction efficiency of this approach,
relying on Fourier transform spectral interferometry techniques to characterize the coherent
filter. Two different PSHB materials are considered, with two different setups, involving
different values of repetition rate, fluence, wavelength, spectral width and pulse duration.