Showing papers by "Eric W. Van Stryland published in 1987"
TL;DR: In this paper, the combination of nonlinear absorption and nonlinear refraction in these materials result in optical limiting for input energies as low as 0.15 microjoules for 30 psec pules at 532 nm.
Abstract: Picosecond nonlinear absorption and nonlinear refraction were studied for several classes of isotropic phase liquid crystals, including Schiff base and ester compounds. Materials studied exhibit a large two-photon absorption coefficient (j3) at 532 nm.Values of j3 were found to be -0.6 cm/GW in several of the compounds studied. Nonlinear refraction was also observed and the nonlinear refractive index, n2 was measured for each material at 1.06 pm using an external self-focusing mangement. n2 ranged from 6 × 10-13 esu to 2 × 10-l2 esu. The combination of nonlinear absorption and nonlinear refraction in these materials result in optical limiting for input energies as low as 0.15 microjoules for 30 psec pules at 532 nm.
15 citations
28 Jan 1987
TL;DR: In this paper, the isotropic phase liquid crystals were studied and the two-photon absorption coefficient (f3) was observed at 532 nm with values as large as 0.6 cm/GW.
Abstract: Picosecond nonlinear absorption and nonlinear refraction studies are presented for isotropic phase liquid crystals. These materials exhibit a large two-photon absorption coefficient (f3) at 532 nm, with values as large as 0.6 cm/GW. Nonlinear refraction was also observed and the nonlinear refractive index (n9) was measuv.qd at 1064 nm usiAg an external self-focusing arrangement. Values of n2 range from 6 x 10-13 esu to 17 x 10-13 esu.
1 citations