EP0396172A1
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EP
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Nonlinear optical compound, nonlinear optical medium, method of manufacturing a nonlinear optical medium and device for doubling the frequency of a light wave
Assignee: Koninklijke Philips NV
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Filing: 1990-04-23
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Granted: —
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Expires: 2010-04-23
Abstract
Abstract The invention relates to a nonlinear optical medium and a device comprising such a nonlinear optical medium which can be suitably used to double the frequency of red light, while forming blue light. The nonlinear optical medium comprises a polymer matrix and nonlinear optical compounds which contain a substituted sulphone group as the electron-acceptor group.
Inventors
- 👤 Egbert Willem Meijer
- 👤 Wolter Ten Hoeve
- 👤 Sjef Nijhuis
- 👤 Gerardus Ladislaus Johannes Andreas Rikken
- 👤 Edsko Enno Havinga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 20:12
CPC Classifications
C; C08; C08F; C08F212/00; G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3615; G02F1/3617; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
47 words
A nonlinear optical compound comprising an electron donor group and an electron acceptor group which are linked by a π-conjugated system, characterized in that the electron acceptor group is a sulphone group which contains a substituent selected from the group formed by alkyl, hydroxyl alkyl and alkyl(meth)acrylate.
Claim 2
Dependent Claim
47 words
A nonlinear optical compound comprising an electron donor group and an electron acceptor group which are linked by a π-conjugated system, characterized in that the electron acceptor group is a sulphone group which contains a substituent selected from the group formed by alkyl, hydroxyl alkyl and alkyl(meth)acrylate.
Claim 3
Dependent Claim
53 words
A nonlinear optical compound as claimed in Claim 1, characterized in that the electron-donor group is a group as shown in formula 2 of the formula sheet, wherein n is an integer having a value of at least 1 and R₂ is a substituent selected from the group formed by hydrogen and (meth)acrylate.
Claim 4
Dependent Claim
66 words
A nonlinear optical compound as claimed in Claim 1, characterized in that the electron-donor group is an amino group according to formula 3 of the formula sheet, wherein n is an integer having a value of at least 1, R₃ is a substituent selected from the group formed by hydrogen and alkyl, and R₄ is a substituent selected from the group formed by hydrogen and meth(acrylate).
Claim 5
Dependent Claim
60 words
A nonlinear optical compound as claimed in any one of the preceding Claims, characterized in that the π-conjugated system has a structure as shown in formula 4 of the formula sheet, wherein a has a value of 0.1 or 2, b has a value of 1 or 2 and A represents an electron-acceptor group and D represents an electron-donor group.
Claim 6
Dependent Claim
46 words
A nonlinear optical medium which comprises a polymer matrix and polarly ordered nonlinear optical compounds, the nonlinear optical compounds comprising an electron donor group and an electron acceptor group which are linked by a π-conjugated system, characterized in that the electron-acceptor group is a sulphone group.
Claim 7
Dependent Claim
46 words
A nonlinear optical medium which comprises a polymer matrix and polarly ordered nonlinear optical compounds, the nonlinear optical compounds comprising an electron donor group and an electron acceptor group which are linked by a π-conjugated system, characterized in that the electron-acceptor group is a sulphone group.
Claim 8
Dependent Claim
27 words
A nonlinear optical medium as claimed in Claim 5, characterized in that the nonlinear optical compounds are compounds as claimed in Claim 1, 2, 3 or 4.
Claim 9
Dependent Claim
28 words
A nonlinear optical medium as claimed in Claim 5 or 6, characterized in that the nonlinear optical compounds are bonded to the polymer matrix in a covalent manner.
Claim 10
Dependent Claim
21 words
A nonlinear optical medium as claimed in Claim 5, 6 or 7, characterized in that the polymer matrix is a poly(meth)acrylate.
Claim 11
Independent Claim
66 words
A method of manufacturing a nonlinear optical medium, in which a solid solution of nonlinear optical compounds comprising a sulphone group as the electron-acceptor group in polymethylmethacrylate is heated to a temperature above the glass transition temperature of the solid solution, after which it is poled under the influence of an electric dc-field and the solution is cooled to a temperature below the glass transition temperature.
Claim 12
Independent Claim
66 words
A method of manufacturing a nonlinear optical medium, in which a solid solution of nonlinear optical compounds comprising a sulphone group as the electron-acceptor group in polymethylmethacrylate is heated to a temperature above the glass transition temperature of the solid solution, after which it is poled under the influence of an electric dc-field and the solution is cooled to a temperature below the glass transition temperature.
Claim 13
Dependent Claim
71 words
A method of manufacturing a nonlinear optical medium as claimed in Claim 7, in which nonlinear optical compounds comprising a sulphone group having a (meth)acrylate group as the substituent are polymerised either with or without (meth)acrylate monomers, after which the polymer obtained is poled at a temperature above the glass transition temperature under the influence of an electric dc field, and, subsequently, cooled to a temperature below the glass transition temperature.
Claim 14
Dependent Claim
50 words
A device for doubling the frequency of a light wave, in which a fundamental light wave is passed through a nonlinear optical medium, so as to form a second harmonic wave, characterized in that the nonlinear optical medium is a medium as claimed in Claim 5, 6, 7 or 8.
References Cited (Backward Citations)
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