US4946235A
Expired / Lapsed
US
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Nonlinear optical waveguide device
Assignee: Eastman Kodak Co
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Filing: 1989-10-11
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Granted: 1990-08-07
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Expires: 2009-10-11
Abstract
Abstract An optical article is disclosed containing contiguously overlying an organic layer for the nonlinear propagation of electromagnetic radiation an amorphous transmission enhancement layer of at least 0.5 μm in thickness transmissive to the nonlinearly propagated electromagnetic radiation, exhibiting a refractive index less than that of the organic layer, and comprised of a low molecular weight aromatic compound.
Inventors
- 👤 Michael Scozzafava
- 👤 Phat T. Dao
- 👤 Douglas R. Robello
- 👤 Jay S. Schildkraut
- 👤 Craig S. Willand
- 👤 David J. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:54
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/061; G02F1/065; Y; Y10; Y10T; Y10T428/00; Y10T428/31504
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
70 words
An optical article comprised of an organic layer for the nonlinear propagation of electromagnetic radiation and a transmission enhancement layer contiguously overlying said organic layer, characterized in that said transmission enhancement layer is an amorphous layer of at least 0.5 μm in thickness transmissive to the nonlinearly propagated electromagnetic radiation, exhibiting a refractive index less than that of said organic layer, and comprised of a low molecular weight aromatic compound.
Claim 2
Dependent Claim
70 words
An optical article comprised of an organic layer for the nonlinear propagation of electromagnetic radiation and a transmission enhancement layer contiguously overlying said organic layer, characterized in that said transmission enhancement layer is an amorphous layer of at least 0.5 μm in thickness transmissive to the nonlinearly propagated electromagnetic radiation, exhibiting a refractive index less than that of said organic layer, and comprised of a low molecular weight aromatic compound.
Claim 3
Dependent Claim
19 words
An optical article according to claim 1 further characterized in that an electrode is located beneath said organic layer.
Claim 4
Dependent Claim
24 words
An optical article according to claim 2 further characterized in that an insulative buffer layer is interposed between said electrode and said organic layer.
Claim 5
Dependent Claim
20 words
An optical article according to claim 1 further characterized in that an electrode is located on said transmission enhancement layer.
Claim 6
Dependent Claim
24 words
An optical article according to claim 1 further characterized in that said organic layer exhibits a glass transition temperature of at least 50° C.
Claim 7
Dependent Claim
25 words
An optical article according to claim 1 further characterized in that said transmission enhancement layer exhibits a glass transition temperature of at least 50° C.
Claim 8
Dependent Claim
27 words
An optical article according to claim 1 further characterized in that said transmission enhancement layer exhibits a thickness in the range of from 1 to 10 μm.
Claim 9
Dependent Claim
27 words
An optical article according to claim 7 further characterized in that said transmission enhancement layer exhibits a thickness in the range of from 1 to 5 μm.
Claim 10
Dependent Claim
27 words
An optical article according to claim 1 further characterized in that said organic layer exhibits a second order polarization susceptibility of greater than 10 -9 electrostatic units.
Claim 11
Dependent Claim
112 words
An optical article containing an organic layer exhibiting a second order polarization susceptibility of greater than 10 -9 electrostatic units for the conversion of electromagnetic radiation of a first wavelength to its second harmonic wavelength and transmission of both wavelengths and a transmission enhancement layer contiguously overlying said organic layer, characterized in that said transmission enhancement layer is an amorphous vacuum vapor deposited layer of from 1 to 10 μm in thickness transmissive to electromagnetic radiation of said first and harmonic wavelengths exhibiting a refractive index less than that of said organic layer and comprised of a low molecular weight aromatic compound exhibiting a glass transition temperature of at least 50° C.
Claim 12
Dependent Claim
112 words
An optical article containing an organic layer exhibiting a second order polarization susceptibility of greater than 10 -9 electrostatic units for the conversion of electromagnetic radiation of a first wavelength to its second harmonic wavelength and transmission of both wavelengths and a transmission enhancement layer contiguously overlying said organic layer, characterized in that said transmission enhancement layer is an amorphous vacuum vapor deposited layer of from 1 to 10 μm in thickness transmissive to electromagnetic radiation of said first and harmonic wavelengths exhibiting a refractive index less than that of said organic layer and comprised of a low molecular weight aromatic compound exhibiting a glass transition temperature of at least 50° C.
Claim 13
Dependent Claim
51 words
An optical device according to claim 10, further characterized in that said aromatic compound is a phenylindan compound of the structure: ##STR39## wherein R and R 1 are independently selected from the group consisting of nitro, amino, carboxyl, formamido groups, carbamoyl groups and heterocyclic groups derived from amino or carboxyl groups.
Claim 14
Dependent Claim
51 words
An optical device according to claim 10, further characterized in that said aromatic compound is a phthalimide compound of the structure: ##STR40## wherein R and R 1 are independently selected from the group consisting of nitro, amino, carboxyl, formamido groups, carbamoyl groups and heterocyclic groups derived from amino or carboxyl groups.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |