Abstract
Multi-mode lasers have evaded satisfactory modelling for their seeming complexity. However, they may serve as sensitive detectors of intracavity spectral absorption [1]. This sensitivity is limited by nonlinear coupling of the laser modes effected by stimulated light scattering of Brillouin (SBS) or thermal Rayleigh (STRS) type [2], or via periodic saturation (“population pulsations”, PP), in the gain medium.
© 1996 Optical Society of America
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