Konica Corporation

Miki Morita

Hidetaka Ninomiya

Toyoaki Masukawa

Noritaka Nakayama

Yoshitaka Takahashi

A novel organic non-linear optical material and a device using the same are disclosed. The material hardly makes reversal symmetrical molecular configuration in a bulk state such as a crystal and a thin layer and shows a high non-linear optical effect. A non-linear optical device using the material has an excellent properties. The organic non-linear optical material is comprised of the following compound: ##STR1## wherein R.sub.1, R.sub.3 and R.sub.4 are independently a hydrogen atom, a cyano group, a phenyl group, an amino group, an alkoxy group, an acylamino group, an alkylthio group, an alkyl group, an alkoxycarbonyl group, carbamoyl group or a heterocyclic group, provided that R.sub.3 is allowed to link together with R.sub.4 to form a ring and R.sub.1, R.sub.3 and R.sub.4 are not hydrogen atom at the same time; R.sub.2 is a hydrogen atom, an alkyl group or an acyl group; and said groups represented by R.sub.1, R.sub.2, R.sub.3, R.sub.4 and the ring formed by linking the groups represented by R.sub.3 and R.sub.4 are allowed to have a substituent.

Non-linear optical material and non-linear optical device employing it

A non-linear optical device applicable to use such as the generation of the higher harmonic waves and the parametric amplification of laser beam is disclosed. The device comprises a crystal of a compound represented by the following Formula I: ##STR1## wherein A is an electron attractive group having 0 to 5 carbon atoms; R.sub.1 is a hydrogen atom, an alkyl group or an alkenyl group; R.sub.2 is a hydroxyl group, an acylamino group or a ureido group; and R.sub.3 is a hydrogen atom or a mono-valent substituent.

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Hino, Japan

Miki Morita