We investigate the lateral shift of a TM-polarized light beam reflected from Otto configuration under grazing incidence. It is found that the lateral shift is strongly dependent on the thickness of the air-gap layer. By employing the pole-null representation, we demonstrate that the lateral shift is closely related to the null of the reflection function. The numerical simulations for a Gaussian beam are performed to demonstrate the validity of our theoretical analysis.
© 2008 Chinese Optics Letters
Haichun Zhou, Chunfang Li, and Xi Chen, "Analysis of the positive or negative lateral shift of the reflected beam in Otto configuration under grazing incidence," Chin. Opt. Lett. 6, 446-448 (2008)