I address the influence of the direct coupling of the average lattice strains to the active ions on the pulse shape and the far-field beam spreading of a Q-switched laser. Calculations are made for the Cr3+: sapphire system. The dynamic behavior of laser divergence as the pulse develops is studied without and with an internal aperture. The results can be used to search for similar effects in lasers involving other ions, such as Ti3+ and Cr4+.
© 1997 Optical Society of America
[Optical Society of America ]
Kamel Aït Ameur, "Divergence temporal dynamics of a Q-switched laser," Appl. Opt. 36, 7809-7817 (1997)