Measurement of the Photon-Plasmon Coupling Phase Shift

Nonlinear phase shift from photon-photon scattering in vacuum.

We show that QED nonlinear effects imply a phase correction to the linear evolution of electromagnetic waves in vacuum. We provide explicit solutions of the modified Maxwell equations for the propagation of a superposition of two plane waves and calculate analytically and numerically the corresponding phase shift. This provides a new framework for the search of all-optical signatures of photon-...

Large phase shift via polarization-coupling cascading.

Herein, we propose a phenomenon of "polarization-coupling (PC) cascading" generated in MgO doped periodically poled lithium niobate crystal (PPMgLN). PC cascading contributes to the effective electro-optical (EO) Kerr effect that is several orders of magnitude stronger than the classical ones. Experiment of Newton's rings demonstrates the large phase accumulation during the PC cascaded processe...

On the measurement of two-photon single-mode coupling efficiency in parametric down-conversion photon sources

Photon-based quantum information schemes have increased the need for light sources that produce individual photons, with many such schemes relying on optical parametric down-conversion (PDC). Practical realizations of this technology require that the PDC light be collected into a single spatial mode defined by an optical fibre. In this paper, we present two possible models to describe single-mo...

Robust measurement of the diffuse surface by phase shift profilometry

As one of the most popular non-contact shape measurement methods, phase shift profilometry has been studied for many decades and has found applications in both the scientific and industrial world. However, its measurement accuracy and noise resistance ability are still widely researched topics. In this paper, a method to determine the phase map by calculating the phases from multiple high carri...

The Measurement of Chromaticity by Head-tail Phase Shift Analysis