Optical limiting properties and z-scan measurements of carbon disulfide at 205  μm wavelength

Abstract

Nonlinear and optical limiting properties of carbon disulfide (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 CS 2 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 CS 2 limited the output energy to 0.6 mJ in the optical limiting experiments for input energies of up to 150 mJ.

Temporal and polarization dependence of the nonlinear optical response of solvents

“…The usefulness of the response function is that it can be used to predict and interpret the outcomes of other NLO experiments over a wide range of pulse widths. For example, for CS 2 , the response functions determined from our BD measurements in [20,25] have successfully predicted the pulse-width dependence of n 2,eff measured from Z-scan [20,29], as well as the results from other experiments, including degenerate four-wave mixing (DFWM) [20] and optical limiting [30]. In a recent study, our NLO response functions have also been used to interpret the results of mid-infrared supercontinuum generation from CS 2 -core optical fibers, which helps us understand new hybrid soliton dynamics as a result of the noninstantaneous NLR of CS 2 [31,32].…”

Mechanism of optical limiting in metalloporphyrins under visible continuous radiation

“…3 The performance of optical limiters is mainly dependent on the properties of the nonlinear optical (NLO) materials. [4][5][6][7] So far, many NLO materials with excellent properties have been reported, 4,7,8 including both inorganic and organic candidates. The inorganic materials, such as inorganic crystals and semiconductor materials, 5,9 are the commonly used materials in the early stage due to their high damage threshold and large optical nonlinearity.…”