  We present a concept for selective excitation of magnetostatic surface waves
with quasi-discrete spectrum using spatially patterned femtosecond laser pulses
inducing either ultrafast change of magnetic anisotropy or inverse Faraday
effect. We micromagnetically simulate excitation of the waves with periodically
patterned uni- or bipolar laser impact. Such excitation yields multiple
wavepackets propagating with different group velocities, whose dispersion
corresponds to the set of quasi-discrete points. In addition, we show that the
frequency of the spectral peaks can be controlled by the polarity of the
periodic impact and its spatial period. Presented consideration of multiple
spatially periodic magnetostatic surface wave sources as a whole enables
implementation of a comprehensive toolkit of spatio-temporal optical methods
for tunable excitation and control of spin wave parameters
