Effect of Surface Nonlinearity Distribution on Second Harmonic Generation under Tightly Focused Beams

نویسندگان

چکیده

A thorough integral formulation describing the second harmonic generation under tightly focused linearly and radially polarized beams for an arbitrary distribution of nonlinear susceptibility over surface isotropic media was presented. We numerically simulated effects caused by straight edge region. In particular, we demonstrated that radiation in normal direction, which is forbidden common cases highly symmetrical surfaces, allowed presence edge. This provided χ(2)xzx-component second-order susceptibility.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Direct Observation of Bulk Second Harmonic Generation inside a Glass Slide with Tightly Focused Optical Fields

Xianghui Wang,1,2 Shima Fardad,1 Susobhan Das,1 Alessandro Salandrino,1 and Rongqing Hui1,* 1Department Electrical Engineering & Computer Science, University of Kansas, Lawrence, Kansas 66045, USA 2Institute of Modern Optics, Nankai University, Key Laboratory of Optical Information Science and Technology, Ministry of Education, Tianjin 300071, China (Received 24 August 2015; revised manuscript ...

متن کامل

Surface plasmon interference excited by tightly focused laser beams.

We show that interfering surface plasmon polaritons can be excited with a focused laser beam at normal incidence to a plane metal film. No protrusions or holes are needed in this excitation scheme. Depending on the axial position of the focus, the intensity distribution on the metal surface is either dominated by interferences between counterpropagating plasmons or by a two-lobe pattern charact...

متن کامل

Highly nonlinear dynamics of third-harmonic generation by focused beams

Beams that experience third-harmonic generation ~THG! also experience Kerr effects. With Kerr effects, beams do not take simple Gaussian shapes, but exhibit nonlinear dynamics. These nonlinear dynamics have an effect on the THG accumulated by focusing and then diverging beams. We formulate a self-consistent and complete set of nonlinear Schrödinger equations for a pair of coupled beams—a fundam...

متن کامل

Generation of second-harmonic beams with switchable curved trajectories

Beamswhich follow curved trajectories are useful in a variety of applications, but up to now have been realized mainly in linear media. We demonstrate theoretically and experimentally the generation of second-harmonic (SH) beams which follow arbitrary convex caustic trajectories. These beams are created in a nonlinear photonic crystal with a second-order susceptibility having a tailored pattern...

متن کامل

Second- and third-harmonic generation with vector Gaussian beams

We consider second-harmonic generation (SHG) and third-harmonic generation (THG) in a nonlinear optical crystal illuminated by a vector Gaussian beam, i.e., a Gaussian beam in which the axial component of the excitation field is considered. This component exhibits twice the Gouy phase shift of the transverse component and vanishes at points on the beam axis. Harmonic generation stemming from th...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Photonics

سال: 2023

ISSN: ['2304-6732']

DOI: https://doi.org/10.3390/photonics10040350