Photon Statistics of Incoherent Cathodoluminescence with Continuous and Pulsed Electron Beams.

ABSTRACT: Photon bunching in incoherent cathodoluminescence (CL) spectroscopy originates from the fact that a single high-energy electron can generate multiple photons when interacting with a material, thus, revealing key properties of electron-matter excitation. Contrary to previous works based on Monte Carlo modeling, here we present a fully analytical model describing the amplitude and shape of the second order autocorrelation function (g ⁽²⁾(τ)) for continuous and pulsed electron beams. Moreover, we extend the analysis of photon bunching to ultrashort electron pulses, in which up to 500 electrons per pulse excite the sample within a few picoseconds. We obtain a simple equation relating the bunching strength (g ⁽²⁾(0)) to the electron beam current, emitter deca

SUBMITTER: Sola-Garcia M 

PROVIDER: S-EPMC7976602 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature