Claims
- 1. An optical article comprising a polymer and an organic photoinitiator having a maximum absorption at a UV wavelength in the range of 400-490 nm, wherein the optical article has a refractive index contrast adjusted sensitivity of greater than 3×10−6 Δn/mJ/cm2.
- 2. The optical article of claim 1, wherein the organic photoinitiator comprises phosphine oxide.
- 3. The optical article of claim 1, wherein the organic photoinitiator is selected from the group consisting of:
- 4. The optical article of claim 1, wherein the polymer is formed by a polymerizing reaction of a material comprising component 1 and component 2, said component 1 comprises a NCO-terminated pre-polymer and said component 2 comprises a polyol.
- 5. The optical article of claim 1, wherein the polymer is formed by a polymerizing reaction of a material comprising component 1 and component 2, said component 1 comprises a NCO-terminated pre-polymer selected from the group consisting of diphenylmethane diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, a derivative of hexamethylene diisocyanate, a methylenebiscyclohexylisocyanate and a derivative of methylenebiscyclohexylisocyanate, and said component 2 comprises a polyol of polypropylene oxide.
- 6. The optical article of claim 1, further comprising a photoactive monomer.
- 7. The optical article of claim 6, wherein the photoactive monomer is an acrylate monomer.
- 8. The optical article of claim 1, wherein the optical article is selected from the group consisting of an optical waveguide and a holographic recording medium and combinations thereof.
- 9. The optical article of claim 1, wherein the optical article has a writing induced shrinkage of less than 0.25 percent.
- 10. The optical article of claim 1, wherein the organic photoinitiator is substantially free of a transition metal complex.
- 11. A method for holographic recording in an optical article comprising exposing the optical article to blue light and writing a hologram in the optical article, the optical article comprising a polymer and an organic photoinitiator having a maximum absorption at a UV wavelength in the range of 400-490 nm, wherein the optical article has a refractive index contrast adjusted sensitivity of greater than 3×10−6 Δn/mJ/cm2.
- 12. The method of claim 11, wherein the organic photoinitiator comprises phosphine oxide.
- 13. The method of claim 11, wherein the organic photoinitiator is selected from the group consisting of:
- 14. The method of claim 11, wherein the polymer is formed by a polymerizing reaction of a material comprising component 1 and component 2, said component 1 comprises a NCO-terminated pre-polymer and said component 2 comprises a polyol.
- 15. The method of claim 11, wherein the polymer is formed by a polymerizing reaction of a material comprising component 1 and component 2, said component 1 comprises a NCO-terminated pre-polymer selected from the group consisting of diphenylmethane diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, a derivative of hexamethylene diisocyanate, a methylenebiscyclohexylisocyanate and a derivative of methylenebiscyclohexylisocyanate, and said component 2 comprises a polyol of polypropylene oxide.
- 16. The method of claim 11, further wherein the optical article further comprises a photoactive monomer.
- 17. The method of claim 16, wherein the photoactive monomer is an acrylate monomer.
- 18. The method of claim 11, wherein the optical article is selected from the group consisting of an optical waveguide and a holographic recording medium and combinations thereof.
- 19. The method of claim 11, wherein the optical article has a writing induced shrinkage of less than 0.25 percent.
- 20. The method of claim 11, wherein the organic photoinitiator is substantially free of a transition metal complex.
- 21. A method for manufacturing an optical article comprising polymerizing a material comprising component 1 and component 2 and forming the optical article, the optical article comprises an organic photoinitiator having a maximum absorption at a UV wavelength in the range of 400-490 nm and the optical article has a refractive index contrast adjusted sensitivity of greater than 3×10−6 Δn/mJ/cm2.
- 22. The method of claim 21, wherein the organic photoinitiator comprises phosphine oxide.
- 23. The method of claim 21, wherein the organic photoinitiator is selected from the group consisting of:
- 24. The method of claim 21, wherein said component 1 comprises a NCO-terminated pre-polymer and said component 2 comprises a polyol.
- 25. The method of claim 21, wherein said component 1 comprises a NCO-terminated pre-polymer selected from the group consisting of diphenylmethane diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, a derivative of hexamethylene diisocyanate, a methylenebiscyclohexylisocyanate and a derivative of methylenebiscyclohexylisocyanate, and said component 2 comprises a polyol of polypropylene oxide.
- 26. The method of claim 21, wherein the optical article further comprises a photoactive monomer.
- 27. The method of claim 26, wherein the photoactive monomer is an acrylate monomer.
- 28. The method of claim 21, wherein the optical article is selected from the group consisting of an optical waveguide and a holographic recording medium and combinations thereof.
- 29. The method of claim 21, wherein the optical article has a writing induced shrinkage of less than 0.25 percent.
- 30. The method of claim 21, wherein the organic photoinitiator is substantially free of a transition metal complex.
RELATED APPLICATION
[0001] This application claims priority from U.S. Provisional Application No. 60/315,713, filed Aug. 30, 2001, which is entitled the same as this application.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60315713 |
Aug 2001 |
US |