A semiconductor laser device includes an edge-emitting laser
monolithically integrated with a diffractive lens formed on the chip
surface to emit a focalized or collimated beam in a direction
perpendicular to the surface. An upper reflective surface and an angled
reflective surface are formed in the chip upper surface. A lower
reflective surface is formed in the chip lower surface. The laser, angled
reflective surface, upper reflective surface, lower reflective surface
and diffractive lens are oriented in relation to one another so that a
first portion of the light emitted by the laser impinges directly upon
the upper reflective surface, which reflects it onto the angled
reflective surface, while a second portion of the light emitted by the
laser impinges directly upon the angled reflective surface. The angled
reflective surface reflects the light portions onto the lower reflective
surface, which in turn reflects them through the diffractive lens.