US4794045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Langmuir-Blodgett films usable in nonlinear optics
Assignee: Thales SA
•
Filing: 1988-01-07
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Granted: 1988-12-27
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Expires: 2008-01-07
Abstract
Abstract A Langmuir-Blodgett film comprises at least one layer of amphiphilic molecules which are of two different types. The first type comprises molecules that are active in nonlinear optics. The second type consists of molecules that are inert or active in nonlinear optics. The mixture of these two types of molecules, in specified proportions, gives a film capable of radiating, perpendicular to the substrate, an optic wave which is a second harmonic with reference to an exciting wave.
Inventors
- 👤 Philippe Robin
- 👤 Evelyne Chastaing
- 👤 Jean P. Pocholle
- 👤 Jean Raffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/355; G02F1/361; G02F1/3618; B; B82; B82Y; B82Y20/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
75 words
A Langmuir-Blodgett film comprising at least one layer of amphiphilic molecules deposited on a substrate, wherein these molecules comprise, first molecules being active in nonlinear optics and second molecules capable of remaining inert or being active in nonlinear optics, said first and second molecules being mixed in specified proportions to obtain a film capable of giving out, perpendicular to the substrate, an optic wave which is a second harmonic with respect to an exciting wave.
Claim 2
Dependent Claim
75 words
A Langmuir-Blodgett film comprising at least one layer of amphiphilic molecules deposited on a substrate, wherein these molecules comprise, first molecules being active in nonlinear optics and second molecules capable of remaining inert or being active in nonlinear optics, said first and second molecules being mixed in specified proportions to obtain a film capable of giving out, perpendicular to the substrate, an optic wave which is a second harmonic with respect to an exciting wave.
Claim 3
Dependent Claim
18 words
A film according to the claim 1 wherein the second molecule comprise molecules of the fatty acid series.
Claim 4
Dependent Claim
18 words
A film according to the claim 2 wherein the second molecule comprise molecules of the behenic acid series.
Claim 5
Dependent Claim
18 words
A film according to the claim 2 wherein the second molecule comprise molecules of the stearic acid series.
Claim 6
Dependent Claim
22 words
A film according to the claim 1 wherein the second molecule of the first type comprise molecules having the following structure: ##STR1##
Claim 7
Dependent Claim
15 words
A film according to the claim 5 wherein the number n is equal to 12.
References Cited (Backward Citations)
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Cited
US4536450A
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US4515429A
Cited
US4531809A
Cited
US4647518A
Cited
US4645693A
Cited
US4728576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-27 | 1992-06-27 | 1992-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-27 | 1996-06-27 | 1996-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-27 | 2000-06-27 | 2000-12-27 | $7700.00 | Window Closed / Lapsed |