Abstract
Experimental measurements of power spectra of a single longitudinal and transverse mode ring dye laser are presented that reveal the critical slowing down of the laser near threshold. External pump noise serves as a probe of the frequency response of the dye laser. Detailed comparisons of the spectral characteristics with computer simulations and an approximate analytic theory are given. The dynamics of spatial pattern formation in a multimode dye laser is examined through measurements of first-passage-time distributions. A comparison of the experiments with computer simulations based on a simple theoretical model of the two-mode laser shows qualitative agreement. These measurements indicate that there are a variety of complex phenomena associated with the transverse mode pattern formation dynamics that need to be addressed theoretically and studied further experimentally.
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Yu, A.W., Agrawal, G.P. & Roy, R. Power spectra and spatial pattern dynamics of a ring laser. J Stat Phys 54, 1223–1241 (1989). https://doi.org/10.1007/BF01044714
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DOI: https://doi.org/10.1007/BF01044714