Synthesis of Wave Plates Using Multilayered Subwavelength Structure
Synthesis of Wave Plates Using Multilayered Subwavelength Structure
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利用多层亚波长结构合成波片
DOI：
10.1143/jjap.43.l439
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
T. Yotsuya
中科院分区：
文献类型：
--
作者：
Wanji Yu;K. Satoh;H. Kikuta;T. Konishi;T. Yotsuya
利用多层亚波长结构(SWS)中的形式双折射效应实现了波片结构。通过将高折射率材料的薄膜涂覆在低折射率衬底上制备的基片上，获得了SWS。用这种镀膜工艺制备的多层单壁结构与基板单层结构相比，具有较强的形式双折射。这一事实导致了实现波片所需的深度比仅使用基础SWS的波片所需的深度更小。在本研究中，利用上述多层SWS设计并制作了用于He-Ne激光器工作波长(λ=632.8 nm)的四分之一波片。实验结果表明，该器件可作为1/4波片使用，对横电磁波和横电磁波的传输效率均接近90%。
The form-birefringence effect exhibited in the multilayered subwavelength structure (SWS) has been applied for the realization of wave plates. The SWS was obtained by coating a thin film of a material with a high refractive index onto a base SWS fabricated on a substrate with low refractive index. The multilayer SWS fabricated by this coating process exhibits strong form birefringence compared with that of the base SWS. This fact results in less depth required to realize wave plates than that with only the base SWS. In this study, a quarter-wave plate for the operating wavelength of a He-Ne laser (λ= 632.8 nm) was designed and fabricated using the above described multilayered SWS. The experimental results demonstrated that the fabricated device is effective as a quarter-wave plate and gives transmission efficiencies near 90% for both transverse electric (TE) and transverse magnetic (TM) waves.