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Hernández FE, Shensky W, Cohanoschi I, et al. Viscosity dependence of optical limiting in carbon black suspensions. Appl Opt. 2002;41(6):1103-7doi: 10.1364/ao.41.001103.
Hernández, F. E., Shensky, W., Cohanoschi, I., Hagan, D. J., & Van, S. (2002). Viscosity dependence of optical limiting in carbon black suspensions. Applied optics, 41(6), 1103-7. https://doi.org/10.1364/ao.41.001103
Hernández, Florencio E, et al. "Viscosity dependence of optical limiting in carbon black suspensions." Applied optics vol. 41,6 (2002): 1103-7. doi: https://doi.org/10.1364/ao.41.001103
Hernández FE, Shensky W, Cohanoschi I, Hagan DJ, Van S. Viscosity dependence of optical limiting in carbon black suspensions. Appl Opt. 2002 Feb 20;41(6):1103-7. doi: 10.1364/ao.41.001103. PMID: 11900132.
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Appl Opt. 2002 Feb 20;41(6):1103-7. doi: 10.1364/ao.41.001103.

Viscosity dependence of optical limiting in carbon black suspensions.

Applied optics

Florencio E Hernández, William Shensky, Ion Cohanoschi, David J Hagan, StrylandEricW Van

Affiliations

  1. School of Optics, Center for Research and Education in Optics and Lasers, University of Central Florida, Orlando 32816-2700, USA. [email protected]

PMID: 11900132 DOI: 10.1364/ao.41.001103

Abstract

We measure the optical limiting behavior of carbon black suspensions in various viscosity solvents by using a 10-Hz repetition rate, 532-nm, 5-ns pulsed laser. We found that, for common solvents used in the past such as water and ethanol, the limiting behavior ceases after a few laser firings and a turnover in the limiting curve appears. This can be explained by depletion of the carbon black within the focal volume. This turnover shifts to lower energies as the viscosity of the solvent becomes greater. However, for low viscosity liquids, such as carbon disulfide or pentane, the limiting is unaffected by the repetition rate, at least for frequencies up to 10 Hz, because of diffusion of the carbon black particles. This diffusion allows fresh material to replace the irradiated volume within the time between pulses.

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