  We show that nearly degenerate Vertical External-Cavity Surface-Emitting
Lasers emit tilted beams of time localized structures, i.e. mode-locked light
pulses which can be individually addressed. These beams feature a Gaussian
profile and they are emitted in pairs with opposite transverse k-vector.
Because they are phase locked, their interference leads to a non homotetic
pattern in the near-field emission of the laser. When a single pair is emitted
this is a stripe pattern. Our analysis discloses the role of spherical
aberrations of the cavity in stabilizing this spatio-temporal mode-locked
regime and in selecting the value of the transverse wavevector.
