Shen Hongyuan. A method for calculation of beam parameters in stable optical resonators[J]. Chinese Journal of Lasers, 1982, 9(12): 749
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An equivalen feresonator has been proposed. By adopting the ABCD law, we are able to establish an expression, which represents the relation between the optical beam parameters and the transmission ray-transfer matrix of the equivalent resonator. In comparison with the self-consistent method of ray-transfer matrix, it reduces (N-2) second-order matrices, thus simplifying the calculation process, and the validity of calculation results are also checked.