We propose and realize a simple technique to measure the tiny spin Hall effect of light from the ratio of the minimum and the maximum intensities along two cross-polarization directions, without the requirement of a position-sensitive detector in the conventional weak measurement. Furthermore, the weak intensity ratio is dramatically amplified by purposely choosing the intensity along the direction close to that of the minimum instead of the maximum along the perpendicular polarization direction, which is verified by the experimental results. In principle, this method also can be modified for measurement of the high extinction ratio of a polarizer.
© 2014 Optical Society of America
Original Manuscript: March 21, 2014
Revised Manuscript: April 22, 2014
Manuscript Accepted: April 28, 2014
Published: June 4, 2014
Bo Wang, Yan Li, Meng-Meng Pan, Jin-Li Ren, Yun-Feng Xiao, Hong Yang, and Qihuang Gong, "Measuring spin Hall effect of light by cross-polarization intensity ratio," Opt. Lett. 39, 3425-3428 (2014)