Chinese Optics Letters, 2017, 15 (2): 022401, Published Online: Jul. 26, 2018
Observing the spin Hall effect of pseudothermal light through weak measurement Download: 865次
240.3695 Linear and nonlinear light scattering from surfaces 030.1640 Coherence 070.0070 Fourier optics and signal processing
Abstract
The spin Hall effect of light (SHEL) can be observed by the dark strip resulting from weak measurement. We find that the SHEL of a partially coherent beam (PCB) has a similar phenomenon as well. However, the dark strip in the SHEL of a PCB cannot be explained by considering the beam as an assemblance of coherent speckles. Also, the dark strip in a PCB is not purely dark. By analyzing the autocorrelation, we show that the SHEL of a PCB is the result of overlapping coherent speckles’ SHEL. We further prove our conclusion by adjusting convergence and incident angles. Finally, we develop a qualitative theory to clarify the SHEL of a PCB.
Bin Cao, Dong Wei, Pei Zhang, Hong Gao, Fuli Li. Observing the spin Hall effect of pseudothermal light through weak measurement[J]. Chinese Optics Letters, 2017, 15(2): 022401.