Magnetic Field Controlled Diffraction Grating
A novel magnetically tunable diffraction grating based on V-shaped and magnetic nanoparticles is proposed and demonstrated experimentally. The gratings period we made was 10 1m, and the grooves and the convex groove were both 5 1m. The refraction index of the ferrofluid is sensitive to surrounding magnetic field. Weve demonstrated the magnetically tenability of this grating by measuring the changing of the diffraction angle of the high order diffraction light. The diffracted light was received by CCD and the movement of the laser spot, i.e., the small change of the diffraction angel was recorded. This approach is a good candidate for the following applications: magnetic sensors, magnetic controlled optical switches, modulator and so on.
Guojing Huang Henghe Jiang Bin Zhou Zhuo Chen
Centre for Optical and Electromagnetic Research, South China Academy of Advanced Optoelectronics South China Normal University, Guangzhou 510631, China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
60-63
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）