0.1～100mW激光功率基准与副基准比对OA

To ensure the accurate and consistent transfer of laser power scales,a direct comparison between the primary standard and the secondary standard for 0.1～100 mW laser power was conducted.The comparison was carried out under both broadband uniform irradiation condition and laser beam condition.Excellent agreement was achieved under uniform irradiation condition,with a relative deviation within-0.08%and an En value of-0.08.Under the laser beam condition,the initial relative deviation of the power realizations was-1.64%.The response uniformity of the primary standard and the secondary standard was experimentally investigated,revealing that the secondary reference device exhibited a measurable non-uniformity under laser beam conditions.After correcting the responsivity of the secondary standard based on the response uniformity,the relative deviation decreased to-0.26%.and the En value of-0.25,which achieved an excellent agreement for realization of the 0.1～100 mW laser power primary standard and the secondary standard.