Patent ID: 7653115
Filing Date: 2010-01-26
Classification: G02B,H01S

Abstract:
1. A semiconductor laser device, comprising: a stack array laser diode including a plurality of laser beam elements arranged in a plurality of columns in a two-dimensional array in a manner such that each of a plurality of emitters extending in a first direction for emitting laser beams are aligned as a plurality of columns in a direction perpendicular to the first direction; a first condenser arranged in front of the stack array laser diode for a collimation by refracting each column of the laser beams in a second direction that is substantially perpendicular to the first direction; a first beam converter arranged in front of the first condenser for receiving the laser beams collimated in the second direction and radiating by converting each group of the laser beams into a substantially ladder-shaped laser beam column that extends in the first direction; a beam compressor configured to receive a plurality of columns of the substantially ladder-shaped laser beam groups and radiating by converting the columns of the laser beam groups into a plurality of columns of substantially ladder-shaped laser beam groups that are compressed into a form having shorter intervals of ladder steps and extending in the first direction; a second beam converter arranged in front of the beam compressor for receiving the plurality of the columns of the substantially ladder-shaped laser beam groups extending in the first direction with shortened intervals of the ladder steps, and converting each column of the substantially ladder-shaped laser beam groups extending in the first direction into a corresponding column of substantially ladder-shaped laser beam groups extending in the second direction, wherein all of the laser beams are converted into substantially ladder-shaped laser beam groups that are aligned in the second direction; a second condenser configured for a parallelization by collimating the substantially ladder-shaped aligned laser beams in the direction substantially perpendicular to the second direction; and a third condenser configured to condense the laser beams radiated from the second condenser at a focal point.