Optical limiting properties and z-scan measurements of carbon disulfide at 2.05 μm wavelength

Nonlinear and optical limiting properties of carbon disulfide (CS2) are characterized at 2.05 mu m wavelength using a Q-switched Ho:YLF laser with high pulse energy. The nonlinear refractive index of CS2 is measured using the z-scan technique, giving a value of (1.9 +/- 0.5).10(-18) m(2)/W, i.e., (7.2 +/- 1.9).10(-12) esu, for the 25 ns pulses from the Ho:YLF laser. Self-focusing and dielectric breakdown in CS2 limited the output energy to 0.6 mJ in the optical limiting experiments for input energies of up to 150 mJ. (C) 2016 Optical Society of America