Comparison of optical power limiting in carbon-black suspensions, C60 in toluene, and C60 in chloronaphthalene at 694 nm

This paper presents the results of a comparison study among three carbon-based solutions: a carbon-black suspension, C 60 in toluene, and C 60 in chloronaphthalene. The carbon-black suspensions were used as baseline samples for comparison with the C 60 solutions and were fabricated with the same transmission at 694 nm as the C 60 samples. A ruby laser operating both with and without the Q-switch was used in this study. The limiting results of the C 60 materials are compared with the predicted results from a five-level model previously used to calculate the optical limiting performance of C 60 at 532 nm.