J Mater Sci Technol ›› 2012, Vol. 28 ›› Issue (2): 97-102.

• Thin Film and Coatings •     Next Articles

Fabrication of Optical Tunable Helical Thin Films

Linxin Hu, Peng Wang, Xingyang Wan, Shaoji Jiang   

  1. State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2010-07-12 Revised:2010-09-07 Online:2012-02-28 Published:2012-02-24
  • Contact: Shaoji Jiang
  • Supported by:

    the National Natural Science Foundation of China (Grant No. 60977042), the Natural Science Foundation of Guangdong Provincial (Grant No.
    9151027501000070)

Abstract: Circular polarization selection of light is an important property of helical micro-nanostructure. The helical thin films fabricated by glancing angle deposition can provide both circular polarization selection and wavelength tuning in this work. Their selective transmissions were depicted in calculations and experiments. The wavelength tuning mechanism was revealed as the relationship between peak wavelength and deposition parameters. Therefore, tunable circular polarization components can be designed according to the mechanism mentioned above and fabricated by glancing angle deposition techniques. Potential applications include tunable optical filters, optical pulse-shapers, biosensors etc.

Key words: Glancing angle deposition, Helical thin films, Circular polarization selective transmission, Wavelength tuning