Sterically stabilized second-order nonlinear optical chromophores and devices incorporating the same

US6361717B1 · kind B1 · utility

Assignee

• Pacific Wave Industries, Inc. · US

Inventors

• Larry R. Dalton · Silverdale, US
• Cheng-Chun Zhang · Nanhu, CN
• Chuanguang Wang · Los Angeles, US
• Harold R. Fetterman · Santa Monica, US
• Fang Wang · Foster City, US
• William Steier · San Marino, US
• Aaron W. Harper · Monterey Park, US
• Albert S. Ren · Los Angeles, US
• Joseph Darryl Michael · University Heights, US

Key dates

• Filing date: Jan 20, 2000
• Grant date: Mar 26, 2002
• Expiry date: Jan 20, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F1/3615
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Sterically stabilized second-order nonlinear optical chromophores and devices incorporating the same are embodied in a variety of chromophore materials. An exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a bridge structure therebetween, with the electron acceptor group being double bonded to the bridge structure. In a preferred embodiment, the bridge structure also includes at least one bulky side group. Another exemplary preferred chromophore includes an electron donor group, an electron acceptor group and a ring-locked bridge structure between the electron donor group and the electron acceptor group. The bridge structure comprises, for example, two protected alicyclic rings or ring-locked trienone. Another exemplary preferred chromophore includes an electron donor group, a ring-locked tricyano electron acceptor group, and a bridge structure therebetween. In a preferred embodiment, the electron acceptor group comprises an isophorone structure.