A theory for the beam pointing variation of the optical beam from a pulsed XeCl* excimer laser equipped with a positive branch unstable resonator is introduced. The measurements are in good agreement with the calculations.
Hofstra, R. M., Zwegers, M. J., Zwegers, M. J., van Goor, F. A., & Witteman, W. J. (1998). On the beam pointing variation of a long pulse XeCl* excimer laser fitted with unstable resonators. Optics communications, 1998(157), 121-127. https://doi.org/10.1016/S0030-4018(98)00540-9