Beam Uniformity Measurements for Q-Switched Nd:YAG Lasers
NAVAL WEAPONS CENTER CHINA LAKE CA
Pagination or Media Count:
The output beam uniformity of a Q-switched NdYAG laser, using four different flashlamp-laser rod pump cavity coupling configurations, is described. The test apparatus and test procedure used to establish the beam uniformity quantitatively are given. A newly defined beam uniformity parameter M, the ratio of maximum-to-average peak power density, is shown to vary significantly for the pump cavities tested. The data presented on beam uniformity is applicable toward improving laser pump cavity design, interpreting particular missile and seeker tracking behavior, comparing techniques for measuring laser beam divergence and is an aid in establishing the damage threshold level for retinal tissues and laser resonator components at 1.06 micrometers.
- Lasers and Masers