  We observe that focusing a femtosecond laser beam simultaneously chirped in
time and space domains in glass can efficiently suppress the optical aberration
caused by the refractive index mismatch at the interface of air and the glass
sample. We then demonstrate three dimensional microprocessing in glass with a
nearly invariant spatial resolution for a large range of penetration depth
between 0.25 mm and 9 mm without any aberration correction.
