Optical reconfiguration of surface relief gratings on supramolecular polymer films using grating translation and superposition
Optical reconfiguration of surface relief gratings on supramolecular polymer films using grating translation and superposition
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使用光栅平移和叠加对超分子聚合物薄膜上的表面浮雕光栅进行光学重构
DOI：
10.1063/1.5097841
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发表时间：
2019
影响因子：
3.2
通讯作者：
D. McGee
中科院分区：
文献类型：
--
作者：
J. Krüger;N. Bolle;T. Calvelo;S. Bergmann;H. Abourahma;D. McGee
我们演示了写在超分子偶氮苯聚合物薄膜上的表面浮雕光栅的光学擦除和放大。偶氮苯-聚合物膜的可逆光机械响应使得能够通过光栅叠加进行表面重构，光栅叠加通过机械膜平移和在激光干涉图案中曝光来实现。正弦表面浮雕光栅可以用激光曝光进行光擦除和再生，其干涉图样可以移动半个周期。光栅也可以通过多次平移和以整数周期步长曝光来放大和扩大其表面覆盖范围。报道了用光栅扫描和10个条纹的步进曝光从振幅为78 nm的初始光栅制备出振幅为697 nm的2 0 × 2 0 mm 2的表面光栅，并研究了写入在偶氮苯聚合物超分子薄膜上的表面浮雕光栅的光学擦除和放大。偶氮苯-聚合物膜的可逆光机械响应使得能够通过光栅叠加进行表面重构，光栅叠加通过机械膜平移和在激光干涉图案中曝光来实现。正弦表面浮雕光栅可以用激光曝光进行光擦除和再生，其干涉图样可以移动半个周期。光栅也可以通过多次平移和以整数周期步长曝光来放大和扩大其表面覆盖范围。本文报道了从振幅为78 nm的初始光栅经光栅扫描和10个条纹的步进平移再曝光，制作出振幅为697 nm的2.0 × 2.0mm2面光栅。
We demonstrate the optical erasure and amplification of surface relief gratings written on supramolecular azobenzene-polymer films. The reversible photomechanical response of azobenzene-polymer films enables surface reconfiguration through grating superposition, which is implemented through mechanical film translation and exposure in a laser interference pattern. Sinusoidal surface relief gratings could be photoerased and regenerated using laser exposures with interference patterns shifted by half a period. Gratings could also be amplified and their surface coverage extended through multiple translations and exposures at integer-period steps. We report the fabrication of a 2.0 × 2.0 mm 2 surface grating of amplitude 697 nm from an initial grating of 78 nm amplitude through raster scanning and reexposing using a step translation equal to 10 fringes.We demonstrate the optical erasure and amplification of surface relief gratings written on supramolecular azobenzene-polymer films. The reversible photomechanical response of azobenzene-polymer films enables surface reconfiguration through grating superposition, which is implemented through mechanical film translation and exposure in a laser interference pattern. Sinusoidal surface relief gratings could be photoerased and regenerated using laser exposures with interference patterns shifted by half a period. Gratings could also be amplified and their surface coverage extended through multiple translations and exposures at integer-period steps. We report the fabrication of a 2.0 × 2.0 mm 2 surface grating of amplitude 697 nm from an initial grating of 78 nm amplitude through raster scanning and reexposing using a step translation equal to 10 fringes.