Picosecond optical vortex-induced chiral surface relief in an azo-polymer film
Picosecond optical vortex-induced chiral surface relief in an azo-polymer film
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DOI：
10.1117/1.jnp.14.016012
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发表时间：
2020-01
影响因子：
1.5
通讯作者：
K. Masuda;Ryo Shinozaki;Ami Shiraishi;Mitsuki Ichijo;K. Yamane;K. Miyamoto;T. Omatsu
中科院分区：
文献类型：
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作者：
K. Masuda;Ryo Shinozaki;Ami Shiraishi;Mitsuki Ichijo;K. Yamane;K. Miyamoto;T. Omatsu
摘要。我们报道了由于双光子吸收异构化，偶氮聚合物薄膜中皮秒光学涡流诱导的手性表面起伏的首次演示。由于高度聚焦光的Airy模式，手性表面浮雕表现出极窄的离焦容错性，没有不希望的外环。这种手性表面起伏反映了自旋-轨道角动量耦合引起的具有方位螺旋相位的z极化电场。
Abstract. We report on the first demonstration of picosecond optical vortex-induced chiral surface relief in an azo-polymer film due to two-photon absorption isomerization. The chiral surface relief exhibits an extremely narrow defocusing tolerance without undesired outer rings due to the Airy pattern of highly focused light. Such chiral surface relief reflects a z-polarized electric field with an azimuthal helical phase caused by spin–orbital angular momentum coupling.