Thomas Smith;Jeffrey G. Linhardt;Dharmendra Jani;Wayne H. Knox;Li Ding
发明人:
Thomas Smith,Wayne H. Knox,Li Ding,Dharmendra Jani,Jeffrey G. Linhardt
申请号：
US12380892
公开号：
US09060847B2
申请日:
2009.03.04
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A method for modifying the refractive index of an optical, hydrogel polymeric material. The method comprises irradiating predetermined regions of an optical, polymeric material with a laser to form refractive structures. To facilitate the formation of the refractive structures the optical, hydrogel polymeric material comprises a photosensitizer. The presence of the photosensitizer permits one to set a scan rate to a value that is at least fifty times greater than a scan rate without the photosensitizer in the material, yet provides similar refractive structures in terms of the observed change in refractive index. Alternatively, the photosensitizer in the polymeric material permits one to set an average laser power to a value that is at least two times less than an average laser power without the photosensitizer in the material, yet provide similar refractive structures.
