High power laser beam intensity mapping apparatus.

摘要

A scanning system which obtains and displays the spatial energy distribution of a high power laser beam. The beam (30) to be examined is directed toward two knife-edge mirrors (34, 35) arranged to pass only a thin vertical segment (40) of the beam and to reflect the remainder of the beam to power absorbers (46, 47). The mirrors are scanned across the beam, and a scanning disk (50) having helical slots (51) therein samples the vertical segment, and these samples are directed by means of a paraboloid mirror (70) toward a detector (60) responsive to the wavelength of the laser beam. The output of the detector is placed into storage (140) and thereafter displayed on a high resolution color monitor (150) with different colors representing different energy levels or as a simulated three dimensional display so that an operator may obtain an indication of the spatial energy distribution of the laser beam under examination.