ANALYTICAL EXPRESSION OF SECOND-ORDER AND THIRD ORDER DISPERSIONS IN THREE-ELEMENT RESONATOR USED FOR KERR LENS MODE-LOCKING

In this paper,we give an analytical expression of second-and third-order dispersions for three-element cavity.The variations of the second- and third-order dispersions owing to the changing of Ti:Al 2 O 3 crystal and prismatic output coupler are calculated.The results provide a theoretical basis for the design of three-element cavity.