## The role of the Gouy phase anomaly in the unification of the geometric and physical models for the propagation of focussed fields

Although first discovered over a century ago by the scientist of the same name, the Gouy phase effect continues to awaken considerable interest in the scietific community. In this work the authors study the spherical wave (as one...[more]

[more]Although first discovered over a century ago by the scientist of the same name, the Gouy phase effect continues to awaken considerable interest in the scietific community. In this work the authors study the spherical wave (as one of the most illustrative tools in optics) and the coexistence therein of geometric and diffractive behaviours. The Gouy phase anomaly plays a prominent role in this analysis.

Note: This paper originally appeared in the proceedings of the 118. Jahrestagung der Deutsche Gesellschaft für angewandte Optik.

Citation: O. BALADRON-ZORITA and F. WYROWSKI, "The role of the Gouy phase anomaly in the unification of the geometric and physical models for the propagation of focussed fields", www.applied-computational-optics.org, 21.08.2017

## Second harmonic generation under phase-mismatched conditions

Second harmonic generation is an important effect of nonlinear optics. It is well discussed for cw processes, so in this project we want to show it´s properties for ultrashort pulses through the use of the simulation software...[more]

[more]Second harmonic generation is an important effect of nonlinear optics. It is well discussed for cw processes, so in this project we want to show it´s properties for ultrashort pulses through the use of the simulation software VirtualLab Fusion \cite{vlfusion}. The fundamental principles are explained in my previous report 'Second harmonic generation under phase-matching conditions'. In this report we discuss the physical effects when phase-matching conditions are not met.

Citation: D.KÜHN, F.WYROWSKI, "Second harmonic generation under phase-mismatched conditions", www.applied-computational-optics.org, 22.01.2016

## Second harmonic generation for ultrashort pulses in phase-matching conditions

It is well discussed for cw processes, and in this project we want to show it´s properties for ultrashort pulses by using the simulation software VirtualLab Fusion. Citation: D. KÜHN, F. WYROWSKI, "Second harmonic...[more]

[more]It is well discussed for cw processes, and in this project we want to show it´s properties for ultrashort pulses by using the simulation software VirtualLab Fusion.

Citation: D. KÜHN, F. WYROWSKI, "Second harmonic generation for ultrashort pulses in phase-matching conditions", www.applied-computational-optics.org, 08.12.2015

## Polarization crosstalk due to refraction at a plane interface

In this paper we explain the reason why polarization crosstalk appears when light is refracted at a plane interface. Citation: S. ZHANG, and F. WYROWSKI, "Polarization crosstalk due to refraction at a plane...[more]

[more]In this paper we explain the reason why polarization crosstalk appears when light is refracted at a plane interface.

Citation: S. ZHANG, and F. WYROWSKI, "Polarization crosstalk due to refraction at a plane interface", www.applied-computational-optics.org, 17.11.2015

## Ray tracing in graded-index medium

Ray path in graded-index medium is curved and can be solved numerically by using eikonal equation, which is the starting point of geometrical optics. In this report, derivation of eikonal equation, the relation between eikonal...[more]

[more]Ray path in graded-index medium is curved and can be solved numerically by using eikonal equation, which is the starting point of geometrical optics. In this report, derivation of eikonal equation, the relation between eikonal equation and Fermat¡¯s principle is shown. Moreover, general ray equation for graded-index medium is derived from eikonal equation. Then, ray path can be realized more efficiently and accurately by solving the ray equation with Runge-Kutta method.

Citation: H. ZHONG, S. ZHANG, and F. WYROWSKI, "Ray tracing in graded-index medium", www.applied-computational-optics.org, 25.10.2015