Nonspecular shifts of microwaves in partial reflection

Abstract

An experimental study of beam shifts occurring in partial reflection from a planar dielectric interface is presented. A novel Goos-Hänchen-like shift in the regime below total reflection has been found depending on polarization, angle of incidence, and beam width. The shift is accompanied by an angular shift. The results match theoretical predictions based on the theory of moments of light beams.

Dielectric microcavities: Model systems for wave chaos and non-Hermitian physics

“…In the regime of kσ ≈ 1, the Lai result also shows unphysical singularities . Measurements of the GHS in the microwave regime have been done by Müller et al (2006) and Unterhinninghofen et al (2011).…”

“…The FF effect in reflection has been measured in the microwave regime (Müller et al, 2006) and in the optical regime ).…”

Resonance-like Goos-Hänchen shift induced by nano-metal films

“…Essentially two problems have to be solved: The GHS does neither diverge nor disappear when approaching the critical angle and the observed dependence on the beam diameter. As mentioned above there is a continuous transition from total to partial reflection as is shown in [4]. There is one agreement of the experimental results and the theoretical data since Artman's [3] early study: the GHS is larger for TM than for TE polarized waves.…”

“…Moreover, theoretical approaches and some experimental investigations predict a discontinuity of the GHS at the critical angle and no shift at angles below the critical one, see for instance [3]. Recently, however, it was shown by Müller et al [4] that there is a continuous transition from the angles of total reflection to angles of partial reflection. The novel result is, also partial reflection shows a significant beam shift between the incident and the reflected beam.…”

Frustrated Total Internal Reflection: Resonant and Negative Goos–Hänchen Shifts in Microwave Regime

“…Recently, the limitation of stationary-phase method seems to be more and more distinct as the new elements such as absorbing media, active media and metamaterial are constantly being introduced. Consequently, some people chose the straightforward calculations from light moments theory [6] or Renard's [7] energy flux theory. As to the experimental work, at present there are two focuses: (1) how to enhance the GHSs considerably [8,9] and (2) how to implement the negative shifts [10].…”