Near-field effect of output mirror misalignment in an axisymmetric folded and combined CO2 laser cavity.
The cavity axes change when the output mirror is misaligned because these cavities possess a common output mirror. We use 4x4 augmented matrices to establish new cavity axes, which result in different line deviations for different cavities. These deviations increase the diffraction losses and decrease the output power. The coordinate transforms are used to solve the output light fields because the output beams do not have a common propagation direction. We show that the shapes of the combined laser beams change when the output mirror is misaligned. These studies provide references for the design and application of CO(2) lasers.
Department of Optoelectronic Science and Technology, Sichuan University, Chengdu 610064, China. xuyonggen06@126.com
Yonggen
Y
Xu
Yude
Y
Li