Spectral Shift Amplification and Polarization-Controlled Spectral Shift with Silver Metal

Pin Han,Yung-Chieh Tseng

doi:10.3390/met6010007

Abstract

The spectral shift amplification effect and polarization-controlled spectral shifts are studied using silver (Ag) metal. The spectral shift amplification factor can be doubled by using silver compared with using water. The solid Ag metal surface also provides orientation freedom for polarization-controlled spectral shifts, benefiting data transmission applications in any direction. The liquid water interface provides only limited direction at the Brewster angle. Besides those advantages, the higher reflectivity of Ag reflects higher spectral intensity, which makes the signal easier to detect. The spectral switch phenomenon that depends on the central wavelength variation is also presented.

Highlights

Spectral modulation studies spectra modifications using different mechanisms, for example, optical vortex [1], aperture diffraction [2], surface plasmon [3], scattering [4], and nonlinearity [5].Some interesting phenomena have been found, such as phase singularities [6], spectral switches [7], Talbot spectra [8]
This work investigated the advantages of using silver metal to achieve the spectral shift
This work investigated the advantages of using silver metal to achieve the spectral shift amplification effect at normal incidence and polarization-controlled spectral shifts at oblique amplification effect at normal incidence and polarization-controlled spectral shifts at oblique incidence

Summary

Introduction

Spectral modulation studies spectra modifications using different mechanisms, for example, optical vortex [1], aperture diffraction [2], surface plasmon [3], scattering [4], and nonlinearity [5]. Some interesting phenomena have been found, such as phase singularities [6], spectral switches [7], Talbot spectra [8]. Some applications have been suggested, such as lattice spectroscopy [9] and spatial-coherence spectroscopy [10]. Another new effect called the spectral shift amplification with water has been proposed by the author [11]. There are some drawbacks in using liquid water. Second the liquid water interface is always horizontal, making other orientations difficult and limiting its utilization. Silver metal is selected to overcome these drawbacks and the spectral shift amplification effect is even more notable compared with that using water

Spectral Shift Amplification

Polarization-Controlled

Findings

Conclusions