Reversible tuning of photonic crystal cavities using photochromic thin films
Reversible tuning of photonic crystal cavities using photochromic thin films
复制标题
使用光致变色薄膜可逆调谐光子晶体腔
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
J. Fourkas
中科院分区：
文献类型：
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作者：
D. Sridharan;E. Waks;G. Solomon;J. Fourkas
We demonstrate reversible tuning of a photonic crystal cavity resonance using a thin photochromic film composed of spiropyran and polymethylmethacrylate that serves as a photosensitive cladding layer. Exposure of spiropyran to ultraviolet light results in smooth redshift of the cavity resonance that can be reversed by exposure to visible wavelength light. We achieve a reversible resonance shift of up to 2.7 nm, which can be performed locally on individual cavities. The resonance shift over multiple successive UV and visible light exposures is studied to determine the repeatability of the photochromic film.
