The influence on second-order and third-order dispersions of angular dispersion of laser crystal for four-mirror-cavity KLM laser
激光晶体角色散对克尔透镜锁模激光器二阶、三阶色散的影响

In mest articles, the material dispersion of crystals was and the angular dispersion resulted from the oblique incidence on the laser crystal was ignored, because all the rays with different wavelengths are regarded as the the same path in the laser crystal for the standard four-mirror-cavity KLM laser.In this paper, we present the oscillating loops of the rays with different wavelengths in the resonator and give the analytical expressions of the second-order and third-order dispersions resulted from an oblique incidence on the laser crystal. Also the variations of the second-order and third-order dispersions for the laser crystal and the prism-pair system are calculated.