Non-linear optical studies of nickel dithiolene complexes

Abstract

The third-order optical non-linearity, x ( ~) , linear absorption coefficient, CI, and the ratio of the real to imaginary parts of f 3 ) have been measured at 1.06 pm for a range of nickel dithiolene complexes with absorption bands between 0.77 and 1.06 pm. From these data the non-linear refractive index, n2, and the device-based figure of merit, W ( =Ansat/aA), were calculated. W was found to exceed 2 for materials with absorption maxima below 0.8-0.85 pm. The non-linear refractive index of a poly(methy1 methacrylate) host doped with 8 x 10'' molecules cmP3 of a nickel dithiolene was also measured and found to be nearly 2 x lo-' cm2 kW-'.

Neutral d8 metal bis-dithiolene complexes: Synthesis, electronic properties and applications

“…-Previous investigations of the nonlinear optical properties of these complexes have focused on third-order susceptibilities at 1.06 m for applications in all-optical signal processing [26][27][28][29]. For a few complexes, the two-photon absorption at 1.06 m has been measured, since nonlinear absorption is detrimental to alloptical signal processing; low 2PA coefficients were observed [30,31].…”

Study on the Third-order Nonlinear Optical Properties of bis(tetraethylammonium) bis(1,3-dithiole-2-thione-4,5-dithiolato)cadium

“…The -electron delocalization in conjugated systems can also contribute to the ultrafast response capability and large third-order nonlinearity. Recently, some of these complexes possessing good second-order [5,6] and third-order [7][8][9][10][11] NLO properties have been reported. In this paper, a dmit 2salt: bis(tetraethylammonium)bis(1,3-dithiole-2thione-4,5-dithiolato)cadium was synthesized.…”

Synthesis, crystal structure and third order nonlinear optical properties of bis(tetra‐n‐propylammonium) bis(2‐thioxo‐1,3‐dithiole‐4,5‐dithiolato)cuprate(II)

“…As special π-electron conjugated systems and charge-transfer complexes, they have been used as highly electrical conductors and superconductors [1][2][3][4][5]. Recently, researchers have initiated the investigation on the nonlinear optical (NLO) properties of those coordination complexes, and have found that the π-electron delocalization and charge transfer in the systems can also contribute to an ultrafast optical response capability and large third-order NLO effects [6][7][8][9][10][11][12]. These make them into potential candidates in the NLO domain.…”