Qt. Lu et al., ANALYSIS OF TEM(OO) LASER-BEAM QUALITY DEGRADATION CAUSED BY A BIREFRINGENT ND-YAG ROD, Optical and quantum electronics, 27(9), 1995, pp. 777-783
The effects produced by a birefringent rod on the beam quality factor,
M(r)(2), of a Gaussian TEM(00) laser beam are studied. Analytical exp
ressions for the beam parameters at the output plane of a rod amplifie
r are derived. The theory predicts that the beam quality degrades rapi
dly with the heat power dissipated in the rod.