Abstract
The conventional rate equations for a passively Q-switched laser1,2 are sufficient in cases where the cavity losses are relatively low. This is the usually the case with low-gain Er lasers.3,4 For high-gain lasers, such as Nd:YAG or Er-doped fibers where outcoupling losses can be high, the simple rate equation model breaks down.5 In addition, with the rate equation model, it is not possible to incorporate axial nonurdformities in the photon beam as in the case of a non-plane-parallel resonator, or nonuniformities in the population inversion as in an end-pumped configuration.
© 1996 Optical Society of America
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