POWER DAMPER FOR HIGH POWER LASERS, LASER POWER METER AND LASER POWER MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To prevent laser energy from concentrating locally in a conical laser beam receiving part.;SOLUTION: In the power damper for absorbing laser energy at a laser beam receiving part 11 as thermal energy, by having a conical beam receiving surface irradiated with a laser beam and the laser power meter for measuring the laser power, a laser beam LB is inclined with respect to the cone center axis 1 and incident off the cone center axis 1 toward a direction perpendicular thereto, after passing the cone vertex 3 and two laser beams on a plane involving the cone center axis 1 and the laser beam center axis 5 reflect and advance at reflecting regions in the conical beam-receiving surface, where among the reflecting regions the second and third reflecting regions do not mutually overlap.;COPYRIGHT: (C)2001,JPO