FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Optical Properties of BDK-Doped Highly Photosensitive Sol-Gel Hybrid Film |
XU Ming**, SHEN Wei-Dong**, ZHANG Yue-Guang, ZHEN Hong-Yu, LIU Xu
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State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027
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Cite this article: |
XU Ming, SHEN Wei-Dong, ZHANG Yue-Guang et al 2011 Chin. Phys. Lett. 28 084205 |
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Abstract A new organic-inorganic hybrid material doped with BDK that exhibits a large photo-induced change in optical properties is prepared by the sol-gel method. The photosensitivity of the film under ultraviolet irradiation is investigated with various exposure times. An increase in refractive index from 1.558 to 1.592 at λ = 550 nm is observed together with a 57.3% expansion in physical thickness. The film's optical thickness exhibits an exponential change with the irradiation time. The photo-decomposition of BDK organic groups confirmed by the infrared absorption spectrum contributes to the photosensitive mechanism. A first example of photo-patterning is finally presented by direct light writing.
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Keywords:
42.70.Gi
42.79.Wc
78.20.Ci
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Received: 15 April 2011
Published: 28 July 2011
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PACS: |
42.70.Gi
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(Light-sensitive materials)
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42.79.Wc
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(Optical coatings)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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