The research on beam shaping of stack pulse laser diodes (LDs), which have little emitter interval and bigger
discreteness, by means of the technology of photolithography, filming, precision position adjusting and fiber cylindrical
lens array, and on relative technologies are introduced in this paper. To obtain high peak power, which is in need of
application fields such as laser ranging, laser fuse, laser guidance, gate imaging and laser radar, direct stacking pulse LDs
are widely adopted, but the research on the relative beam shaping technology is done seldom. Owing to the micro-lens is
processed once only during the fabrication and the range interval of it is fixed, technologies now available is difficult to
take account of beam shaping and the interval discreteness of stack pulse LDs. The most advantageous of fiber
cylindrical lens array introduced in this paper is that it can adjust precisely every unit in the array respectively according
to the real emitting interval of stack pulse laser diodes, and carry out beam shaping effectively. After that the high
effectively coupling of multi-mode fiber can be realized. Thus the practical effect of stack pulse LDs is improved in a
large degree.
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