Abstract

Nonlinear and optical limiting properties of carbon disulfide (${\mathrm{CS}}_2$) are characterized at 2.05 μm wavelength using a $Q$-switched Ho:YLF laser with high pulse energy. The nonlinear refractive index of ${\mathrm{CS}}_2$ is measured using the z-scan technique, giving a value of $(1.9\pm 0.5)·{10}^{-18}{\mathrm{m}}^2/\mathrm{W}$, i.e., $(7.2\pm 1.9)·{10}^{-12}\mathrm{esu}$, for the 25 ns pulses from the Ho:YLF laser. Self-focusing and dielectric breakdown in ${\mathrm{CS}}_2$ limited the output energy to 0.6 mJ in the optical limiting experiments for input energies of up to 150 mJ.

© 2016 Optical Society of America

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