The intensity fluctuations in multimode lasers with spatial hole burning are investigated. We give experimental evidence for a self-organized collective behavior resulting from the cross saturation dynamics of spatially hole-burned lasers, in which each mode is characterized by N relaxation oscillation frequencies ω l (l=1, 2, 3,···, N; N: number of oscillating modes), while the total output exhibits a unique relaxation oscillation at the highest frequency in ω l which coincides with that in a single mode laser.
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Otsuka et al. (1992) studied this question.
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