Continuous-wave laser beam fanning in organic solutions: a novel phenomenon

Abstract

If a low-power cw Ar⁺ laser beam (~50 mW) is sent horizontally and focused on the entrance side of a cuvette containing an absorptive solution, the beam fans into the lower half of the cuvette instead of propagating through and forming self-phase-modulation fringes. We call this phenomenon self-beam fanning, which has been observed in several organic solutions. We present here several experimental results and a descriptive model of the phenomenon.

© 1994 Optical Society of America

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