Patterns in Two Photon Photoemission Images of Light Diffracting Structures in Wave Guiding Transparent Thin Films
Journal Title: Bulletin of Pure and Applied Sciences Sec. D – Physics - Year 2018, Vol 37, Issue 2
Abstract
We have studied the patterns in two photon photoemission images of light diffracting structures in wave guiding transparent thin films. We first determined the wave numbers of guided modes that can be expected in dielectric thin films, then used Fraunhofer diffraction to determine the relative amplitude of modes excited at the periphery of the film where the in-coupling occurred. The evolution of waves in the film was then calculated using Fresnel-Kirchhoff integration, where the diffracting structure served as the aperature and a two dimensional, attenuated Green’s function describes the guided mode fields at the vacuum interface. We used the results from this analysis to compute the photoelectron emission rate, which derived from the complex sum of surface fields and incident light. We studied two photonic structures in an aberration corrected photoemission electron microscopy using two photon excitation and compared the electron micrographs to field based calculations, where we found good agreement.
Authors and Affiliations
Sukhdeo Singh
Keywords
Related Articles
- EP ID EP528858
- DOI 10.5958/2320-3218.2018.00009.X
- Views 153
- Downloads 0
Photoionization Spectroscopy of Lithium, Sodium and Potassium Nanoparticles in a Beam for the Metallic Work Function
We have used a modified particle source with a temperature controlled nozzle to measure the temperature dependence of the work function for Lithium, Sodium and Potassium. The temperature dependence of the work function a...
Power Dependence of the Amplitude of the Microwave Radiation Induced Magneto-Resistance Oscillations and Linear Polarisation
We have studied the power dependence of the amplitude of the microwave radiation induced magneto resistance oscillations and the linear polarization sensitivity of these oscillations. For the power dependence, some exper...
Physical and Structural Studies of (30-x) BaO-xAl2O3-69.5B2O3-0.5MnO2 Glasses
(30-x) BaO-xAl2O3-69.5B2O3-0.5MnO2 (0 ≤ x ≤ 15 mol%) (BABM) glasses have been prepared using melt quench method. In the present work, the main focus on the role of Al2O3 in the glass composition. Differential scanning c...
Comparative Study of the Entropy Change of Spinning Black Holes Due to Mass Change in XRBs and AGN
The present paper gives the comparative study of the entropy change of spinning black holes due to mass change in XRBs & AGN and concludes that the ratio of the entropy change in XRBs and AGN decreases with the increase...
Density and Mechanical Properties of Sodium Borotellurite Glasses
Sodium borotellurite glasses in the system xNaF2-(20-x) Na2O-40B2O3-40TeO2 (0 < x < 20 mol%) were prepared by melt quenching method. The density related parameters such as molar volume elastic constants and thermal pro...