Third-order nonlinear optical response of some tetrasubstituted cumulenes

Journal Article · Mon Mar 01 04:00:00 EST 1993 · Chemistry of Materials; (United States)

DOI:https://doi.org/10.1021/cm00027a019· OSTI ID:6952019

Kminek, I; Klimovic, J; Prasad, P N ^[1]

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1. State Univ. of New York, Buffalo (United States)

Third-order nonlinear optical properties of several tetrasubstituted cumulenic compounds were studied using subpicosecond degenerate four-wave mixing (DFWM) in the forward geometry. Mean values of the second molecular hyperpolarizability ([gamma]) of an ensemble of randomly oriented molecules were obtained by comparing the conjugate signal from a solution of the molecules with the signal from a reference liquid (THF). The estimated effective values of [chi][sup (3)], the third-order optical susceptibility, of cumulenic compounds with extended conjugation of the [pi]-electron system are high, partly due to the strong nonlinear optical response of the molecules in their ground state and partly due to the resonance enhancement at the operating wavelength, 602 nm. 1 ref., 3 figs., 1 tab.

• OSTI ID: 6952019
• Journal Information: Chemistry of Materials; (United States), Journal Name: Chemistry of Materials; (United States) Vol. 5:3; ISSN CMATEX; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
ALKENES
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ENERGY LEVELS
GROUND STATES
HYDROCARBONS
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHYSICAL PROPERTIES
POLARIZABILITY
POLYMERS
RESOLUTION
TIME RESOLUTION
TIMING PROPERTIES